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Tram 
Samba Socialist
Joined: May 02, 2003
Posts: 16854
Location: The human race, AKA 'God's Edsel'
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 Posted: Sun Jul 01, 2012 1:04 pm Post subject: Re: Fuel injection problem |
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| HBvdubber wrote: | | I have a 68 square with an FI system that used to work great.....until I changed plugs, points, rotor and cap, and exhaust. It runs really rough and uses twice the gas it used to. In fact, its running on 2 cylinders only (#3 & #4). when I checked the voltage at the #1 and #2 injectors I have no voltage. I checked the grounds to the injectors, and theyre good. I checked the power wire from ecu to injectors and theyre good. Can anybody give me any idea what the problem could be? Im about ready to yank the fule injection and put on dual carbs! please help! |
Trigger points or the connection/ wires to them- the INJECTION trigger points in the bottom of the distributor. Check the wires under the boot also.
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HBvdubber
Samba Member
Joined: October 11, 2011
Posts: 10
Location: Huntington Beach, CA.
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| Posted: Sun Jul 01, 2012 9:30 pm Post subject: |
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| Tram, so what exactly am I checking on the trigger points? I pulled them out before and they looked clean, and had good spring to them. Also cleaned contacts with electrical contact cleaner. As far as checking the wires, theres nothing visible thats broken. Is there a continuity check i shold do with each of the three wires? Im not sure where the wires go from the trigger points, im assuming the ecu. Any further assistance is appreciated! |
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OB Customs
Samba Member
Joined: January 16, 2011
Posts: 77
Location: Washington
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| Posted: Mon Jul 02, 2012 7:09 am Post subject: |
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Hey does anyone know where I can get 2 of the rubber boots that hold the injector plugs into the injectors?
Thanks
Spencer |
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sharkskinman
Lateral Lunatic
Joined: April 26, 2006
Posts: 3848
Location: Deep In My Own Psyche
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| Posted: Fri Jul 06, 2012 1:47 pm Post subject: |
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im having to start to tinker with my F.I.
first when i turn car off after a good drive
i turn the key back on to Bubbles coming into my tank
if im traveling down the highway and have to take foot off gas behind someone,
then accelerate again it bogs down for a bit
when im at a stop light (automatic) and put it in gear it bogs
if im at 15-1700 RPMs then maybe it will take off but Very Slowly
it wont idle for shit
even after first start or slight warm up
it wants to linger around 500RPMs if not just die
It Sucks Sometimes having F.I./Auto
they tie in So Much with each other its hard to determine which is messing up...
just going to Disconnect vacuum to the Auto and plug it to see if that changes Anything
Car will Idle in Park , Yes??
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HBvdubber
Samba Member
Joined: October 11, 2011
Posts: 10
Location: Huntington Beach, CA.
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| Posted: Fri Jul 06, 2012 8:24 pm Post subject: Re: Fuel injection problem |
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| Tram wrote: | | HBvdubber wrote: | | I have a 68 square with an FI system that used to work great.....until I changed plugs, points, rotor and cap, and exhaust. It runs really rough and uses twice the gas it used to. In fact, its running on 2 cylinders only (#3 & #4). when I checked the voltage at the #1 and #2 injectors I have no voltage. I checked the grounds to the injectors, and theyre good. I checked the power wire from ecu to injectors and theyre good. Can anybody give me any idea what the problem could be? Im about ready to yank the fule injection and put on dual carbs! please help! |
Trigger points or the connection/ wires to them- the INJECTION trigger points in the bottom of the distributor. Check the wires under the boot also. |
I checked the connection and wires to the trigger points. No obvious problems. Anyone have any idea what else could be causing my car to run like crap? It seems to only be running on cylinders #3 and #4. Thick black smoke comes out of exhaust when i step on the gas. A little backfiring too. Please help! |
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Tram
Samba Socialist
Joined: May 02, 2003
Posts: 16854
Location: The human race, AKA 'God's Edsel'
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| Posted: Fri Jul 06, 2012 8:27 pm Post subject: Re: Fuel injection problem |
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| HBvdubber wrote: | | Tram wrote: | | HBvdubber wrote: | | I have a 68 square with an FI system that used to work great.....until I changed plugs, points, rotor and cap, and exhaust. It runs really rough and uses twice the gas it used to. In fact, its running on 2 cylinders only (#3 & #4). when I checked the voltage at the #1 and #2 injectors I have no voltage. I checked the grounds to the injectors, and theyre good. I checked the power wire from ecu to injectors and theyre good. Can anybody give me any idea what the problem could be? Im about ready to yank the fule injection and put on dual carbs! please help! |
Trigger points or the connection/ wires to them- the INJECTION trigger points in the bottom of the distributor. Check the wires under the boot also. |
I checked the connection and wires to the trigger points. No obvious problems. Anyone have any idea what else could be causing my car to run like crap? It seems to only be running on cylinders #3 and #4. Thick black smoke comes out of exhaust when i step on the gas. A little backfiring too. Please help! |
All vacuum lines in place and leak free?
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HBvdubber
Samba Member
Joined: October 11, 2011
Posts: 10
Location: Huntington Beach, CA.
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| Posted: Sat Jul 07, 2012 11:05 pm Post subject: Re: Fuel injection problem |
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| Tram wrote: | | HBvdubber wrote: | | Tram wrote: | | HBvdubber wrote: | | I have a 68 square with an FI system that used to work great.....until I changed plugs, points, rotor and cap, and exhaust. It runs really rough and uses twice the gas it used to. In fact, its running on 2 cylinders only (#3 & #4). when I checked the voltage at the #1 and #2 injectors I have no voltage. I checked the grounds to the injectors, and theyre good. I checked the power wire from ecu to injectors and theyre good. Can anybody give me any idea what the problem could be? Im about ready to yank the fule injection and put on dual carbs! please help! |
Trigger points or the connection/ wires to them- the INJECTION trigger points in the bottom of the distributor. Check the wires under the boot also. |
I checked the connection and wires to the trigger points. No obvious problems. Anyone have any idea what else could be causing my car to run
like crap? It seems to only be running on cylinders #3 and #4. Thick black
smoke comes out of exhaust when i step on the gas. A little backfiring too.
Please help! |
Yes, i checked all vacuum lines
All vacuum lines in place and leak free? |
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Tram
Samba Socialist
Joined: May 02, 2003
Posts: 16854
Location: The human race, AKA 'God's Edsel'
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| Posted: Sat Jul 07, 2012 11:11 pm Post subject: Re: Fuel injection problem |
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| HBvdubber wrote: | | Tram wrote: | | HBvdubber wrote: | | Tram wrote: | | HBvdubber wrote: | | I have a 68 square with an FI system that used to work great.....until I changed plugs, points, rotor and cap, and exhaust. It runs really rough and uses twice the gas it used to. In fact, its running on 2 cylinders only (#3 & #4). when I checked the voltage at the #1 and #2 injectors I have no voltage. I checked the grounds to the injectors, and theyre good. I checked the power wire from ecu to injectors and theyre good. Can anybody give me any idea what the problem could be? Im about ready to yank the fule injection and put on dual carbs! please help! |
Trigger points or the connection/ wires to them- the INJECTION trigger points in the bottom of the distributor. Check the wires under the boot also. |
I checked the connection and wires to the trigger points. No obvious problems. Anyone have any idea what else could be causing my car to run
like crap? It seems to only be running on cylinders #3 and #4. Thick black
smoke comes out of exhaust when i step on the gas. A little backfiring too.
Please help! |
Yes, i checked all vacuum lines
All vacuum lines in place and leak free? |
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I know this maybe sounds insulting, but... any chance you crossed two ignition wires? Hey, it happens.
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Give A Pal a Hand!
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May 4, 1970... Never Forget.
RIPRW
"Hell is- other people."- Jean- Paul Sartre |
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HBvdubber
Samba Member
Joined: October 11, 2011
Posts: 10
Location: Huntington Beach, CA.
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| Posted: Mon Jul 09, 2012 9:16 pm Post subject: Re: Fuel injection problem |
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| Tram wrote: | | HBvdubber wrote: | | Tram wrote: | | HBvdubber wrote: | | Tram wrote: | | HBvdubber wrote: | | I have a 68 square with an FI system that used to work great.....until I changed plugs, points, rotor and cap, and exhaust. It runs really rough and uses twice the gas it used to. In fact, its running on 2 cylinders only (#3 & #4). when I checked the voltage at the #1 and #2 injectors I have no voltage. I checked the grounds to the injectors, and theyre good. I checked the power wire from ecu to injectors and theyre good. Can anybody give me any idea what the problem could be? Im about ready to yank the fule injection and put on dual carbs! please help! |
Trigger points or the connection/ wires to them- the INJECTION trigger points in the bottom of the distributor. Check the wires under the boot also. |
I checked the connection and wires to the trigger points. No obvious problems. Anyone have any idea what else could be causing my car to run
like crap? It seems to only be running on cylinders #3 and #4. Thick black
smoke comes out of exhaust when i step on the gas. A little backfiring too.
Please help! |
Yes, i checked all vacuum lines
All vacuum lines in place and leak free? |
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I know this maybe sounds insulting, but... any chance you crossed two ignition wires? Hey, it happens. |
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HBvdubber
Samba Member
Joined: October 11, 2011
Posts: 10
Location: Huntington Beach, CA.
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| Posted: Mon Jul 09, 2012 9:25 pm Post subject: Re: Fuel injection problem |
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| HBvdubber wrote: | | Tram wrote: | | HBvdubber wrote: | | Tram wrote: | | HBvdubber wrote: | | Tram wrote: | | HBvdubber wrote: | | I have a 68 square with an FI system that used to work great.....until I changed plugs, points, rotor and cap, and exhaust. It runs really rough and uses twice the gas it used to. In fact, its running on 2 cylinders only (#3 & #4). when I checked the voltage at the #1 and #2 injectors I have no voltage. I checked the grounds to the injectors, and theyre good. I checked the power wire from ecu to injectors and theyre good. Can anybody give me any idea what the problem could be? Im about ready to yank the fule injection and put on dual carbs! please help! |
Trigger points or the connection/ wires to them- the INJECTION trigger points in the bottom of the distributor. Check the wires under the boot also. |
I checked the connection and wires to the trigger points. No obvious
problems. Anyone have any idea what else could be causing my car to run
like crap? It seems to only be running on cylinders #3 and #4. Thick black
smoke comes out of exhaust when i step on the gas. A little backfiring too.
Please help! |
Yes, i checked all vacuum lines
All vacuum lines in place and leak free? |
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I know this maybe sounds insulting, but... any chance you crossed two ignition wires? Hey, it happens. |
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Update***. I found the braided grounding wire on the dizzy was frayed and only connected by a couple strands. I replaced the wire by soldering a new copper braided wire in place. Started car, still ran rough and backfired. I decided to just drive it to see what would happen. After about 10 minutes of driving, the car miraculously started running great. No more missing, backfiring, etc. And had good power. Well, i drove it around for about a half hour more and the car just died, as if it ran out of gas. Now i dont hear the sound of the fuel pump when i turn the key. Does it sound like i have multiple problems now? Does anyone know what woukd cause to run great after warming up 10 minutes? Also, do you think fuel pump died now too? |
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Mike Fisher
Samba Member
Joined: January 30, 2006
Posts: 12422
Location: Eugene, OR
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Tram
Samba Socialist
Joined: May 02, 2003
Posts: 16854
Location: The human race, AKA 'God's Edsel'
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| Posted: Tue Jul 10, 2012 11:52 am Post subject: |
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| Mike Fisher wrote: | | Fuel pump ground or relay problem. |
Or blown FP fuse, #11, I think.
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May 4, 1970... Never Forget.
RIPRW
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HBvdubber
Samba Member
Joined: October 11, 2011
Posts: 10
Location: Huntington Beach, CA.
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| Posted: Tue Jul 10, 2012 8:30 pm Post subject: |
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| Tram wrote: | | Mike Fisher wrote: | | Fuel pump ground or relay problem. |
Or blown FP fuse, #11, I think. |
Checked fuse, its good. Checked power to fuel pump and its good. Tapped on fuel pump and it started working again. This is a rebuilt fuel pump, so i would expect it not to be defective. Drove some more today, then prolem came back. I hear relay clicking, but no 1 second noise from fuel pump like it should. Do you think the fuel pump is defective or is there maybe another issue causing the fuel pump to do this? |
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Tram
Samba Socialist
Joined: May 02, 2003
Posts: 16854
Location: The human race, AKA 'God's Edsel'
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| Posted: Tue Jul 10, 2012 9:16 pm Post subject: |
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| HBvdubber wrote: | | Tram wrote: | | Mike Fisher wrote: | | Fuel pump ground or relay problem. |
Or blown FP fuse, #11, I think. |
Checked fuse, its good. Checked power to fuel pump and its good. Tapped on fuel pump and it started working again. This is a rebuilt fuel pump, so i would expect it not to be defective. Drove some more today, then prolem came back. I hear relay clicking, but no 1 second noise from fuel pump like it should. Do you think the fuel pump is defective or is there maybe another issue causing the fuel pump to do this? |
if you tap on the pump and it runs again, it's either clogged with debris or it's going bad.
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May 4, 1970... Never Forget.
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Betty Squareback
Samba Member
Joined: March 27, 2012
Posts: 13
Location: Los Angeles
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| Posted: Tue Jul 17, 2012 9:51 am Post subject: Fuel Pump Options? |
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So, when the fuel pump goes bad, what are the options for replacement in order of best to worst? Should one rebuild? Gamble on a bench tested OEM from the classifieds? What?
Mine has been leaving me stranded intermittently, resting for 1-3 days, then whirring into action once the tow truck shows up. This I've come to accept as life with my type 3 (at the moment).
But now I'm smelling gas from that general area and suspect a leak. Not one for bonfires, I think it is now time for a replacement. |
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COFBack
Samba Member
Joined: July 05, 2005
Posts: 2186
Location: Colorado Springs
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| Posted: Tue Jul 17, 2012 10:40 am Post subject: |
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Have you tried pulling it and cleaning it by running diesel fuel through both ways.
When was the last time you cleaned your tank and sock?
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Betty Squareback
Samba Member
Joined: March 27, 2012
Posts: 13
Location: Los Angeles
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| Posted: Tue Jul 17, 2012 11:49 am Post subject: Cleaning.... |
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Owned this car two years have not cleaned the pump, tank or sock. Don't know about po. The fuel filter was changed out about 6 mos ago.
Here are other choice details:
I hear the distinctive fuel pump whine intermittently.
When it does whine, it often does so for a few days.
The volume of the whine is sometimes quiet, becoming louder over 30 -40 minutes.
When it is louder, pulling the headlights on can quiet it down again (for a little while) -- does this indicate maybe a poor ground connection?
So, even if I'm smelling gas, maybe all it needs is a system cleaning?
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Tram
Samba Socialist
Joined: May 02, 2003
Posts: 16854
Location: The human race, AKA 'God's Edsel'
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| Posted: Tue Jul 17, 2012 12:37 pm Post subject: Re: Cleaning.... |
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| Betty Squareback wrote: | Owned this car two years have not cleaned the pump, tank or sock. Don't know about po. The fuel filter was changed out about 6 mos ago.
Here are other choice details:
I hear the distinctive fuel pump whine intermittently.
When it does whine, it often does so for a few days.
The volume of the whine is sometimes quiet, becoming louder over 30 -40 minutes.
When it is louder, pulling the headlights on can quiet it down again (for a little while) -- does this indicate maybe a poor ground connection?
So, even if I'm smelling gas, maybe all it needs is a system cleaning?
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Change all rubber fuel lines. Now. If they're new, find the leak and fix it. One of the lines may have a kink.
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Betty Squareback
Samba Member
Joined: March 27, 2012
Posts: 13
Location: Los Angeles
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| Posted: Tue Jul 17, 2012 12:42 pm Post subject: |
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| So this is not the fuel pump, it's just the lines? |
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Tram
Samba Socialist
Joined: May 02, 2003
Posts: 16854
Location: The human race, AKA 'God's Edsel'
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| Posted: Tue Jul 17, 2012 1:30 pm Post subject: |
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| Betty Squareback wrote: | | So this is not the fuel pump, it's just the lines? |
I don't know. But the point is that unless you want an engine fire, the rubber lines should all be replaced every couple years.
You need to find the leak. it could be the pump, or it could be the lines.
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