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Sputtering/overheating?
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chaosisme
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PostPosted: Wed Jan 15, 2014 2:48 pm    Post subject: Sputtering/overheating? Reply with quote

Yesterday as I was driving the '65 home from school, the car began to die right as I pulled into the driveway. The idle dropped and the gen and oil lights started to flicker. I pulled the car into the garage and shut it off and looked at the engine. It didnt sound weird, just wanted to stall. Prior to that it drove fine. It did seem a bit hot, but yesterday was pretty warm.

The first thing I noticed was that the fuel filter was pretty much empty. I pulled the coil wire and cranked the motor and the pump wouldnt fill it. I pulled the filter and it looked pretty gross so I replaced it. Also, it was a bit low on oil so I filled it.

Today the car ran more or less fine on the way to school and then when I was almost there, I felt the idle starting to drop. The gen light flickered briefly and then went out. When I finally got to school it didnt seem hot at all.

Left school a few hours later and drove home, it drove fine on the freeway, I took an earlier exit to drive on surface streets to see if it would try to do the same thing and it did. Both lights were flickering and it wanted to stall, it made it home. The only thing I noticed was that when I would take off from a dead stop, the car would shudder a bit, which it doesnt normally do.

Checked the points, they were ok, I adjusted them a bit but they werent out of wack. Valves were adjusted probably 1000 miles ago. Cap, rotor, condenser and plugs are probably 2000-3000 miles old.

Im scratching my head. I dont normally drive the car, it mostly sits in the garage. Ive been driving it for about two weeks while the '68 is down, and its been fine except for the last two days. Im thinking its either something fuel or spark related.

Engine is a 1600 dual port, with a 205G distributor, stock solexes, etc. I checked the distributor and it has no wiggle/spring back on the shaft, is that a sign of something.

I tried looking on thesamba what the timing should be set to, is it 10BTDC or 7.5?

Thanks everybody!
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Donnie strickland
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PostPosted: Wed Jan 15, 2014 4:37 pm    Post subject: Reply with quote

If it "mostly sits in the garage", then I'd suspect fuel problems, i.e. gumming up carb jets and so forth. Sitting is the worst thing for the fuel system, especially nowadays. Try running a bottle of Techron or equivalent fuel system cleaner through it.

You say you've checked pretty much all the normal stuff.
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chaosisme
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PostPosted: Wed Jan 15, 2014 5:56 pm    Post subject: Reply with quote

Donnie strickland wrote:
If it "mostly sits in the garage", then I'd suspect fuel problems, i.e. gumming up carb jets and so forth. Sitting is the worst thing for the fuel system, especially nowadays. Try running a bottle of Techron or equivalent fuel system cleaner through it.

You say you've checked pretty much all the normal stuff.


I havent checked the timing yet, because I wasnt sure if it was supposed to be 10BTDC or 7.5, the Old Volks Home site was down but now its back up and its supposed to be 10 degrees.

Not disagreeing with you, but if it were a fuel issue, wouldnt it be manifest the entire time? Not just after a moderate drive? Before the sputtering, it drives great, which is why Im so confused.
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Tram
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PostPosted: Wed Jan 15, 2014 6:53 pm    Post subject: Reply with quote

chaosisme wrote:
Donnie strickland wrote:
If it "mostly sits in the garage", then I'd suspect fuel problems, i.e. gumming up carb jets and so forth. Sitting is the worst thing for the fuel system, especially nowadays. Try running a bottle of Techron or equivalent fuel system cleaner through it.

You say you've checked pretty much all the normal stuff.


I havent checked the timing yet, because I wasnt sure if it was supposed to be 10BTDC or 7.5, the Old Volks Home site was down but now its back up and its supposed to be 10 degrees.

Not disagreeing with you, but if it were a fuel issue, wouldnt it be manifest the entire time? Not just after a moderate drive? Before the sputtering, it drives great, which is why Im so confused.


But your fuel filter was full of crap, correct? Is the filter down by the trans or in between the pump and the carbs?
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chaosisme
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PostPosted: Wed Jan 15, 2014 6:55 pm    Post subject: Reply with quote

Tram wrote:
chaosisme wrote:
Donnie strickland wrote:
If it "mostly sits in the garage", then I'd suspect fuel problems, i.e. gumming up carb jets and so forth. Sitting is the worst thing for the fuel system, especially nowadays. Try running a bottle of Techron or equivalent fuel system cleaner through it.

You say you've checked pretty much all the normal stuff.


I havent checked the timing yet, because I wasnt sure if it was supposed to be 10BTDC or 7.5, the Old Volks Home site was down but now its back up and its supposed to be 10 degrees.

Not disagreeing with you, but if it were a fuel issue, wouldnt it be manifest the entire time? Not just after a moderate drive? Before the sputtering, it drives great, which is why Im so confused.


But your fuel filter was full of crap, correct? Is the filter down by the trans or in between the pump and the carbs?


It was in between the pump and carbs, I relocated it behind the firewall when I changed it. Could it be that there was crud in the pump and I just pushed it to my carbs?
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Tram
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PostPosted: Wed Jan 15, 2014 6:57 pm    Post subject: Reply with quote

chaosisme wrote:
Tram wrote:
chaosisme wrote:
Donnie strickland wrote:
If it "mostly sits in the garage", then I'd suspect fuel problems, i.e. gumming up carb jets and so forth. Sitting is the worst thing for the fuel system, especially nowadays. Try running a bottle of Techron or equivalent fuel system cleaner through it.

You say you've checked pretty much all the normal stuff.


I havent checked the timing yet, because I wasnt sure if it was supposed to be 10BTDC or 7.5, the Old Volks Home site was down but now its back up and its supposed to be 10 degrees.

Not disagreeing with you, but if it were a fuel issue, wouldnt it be manifest the entire time? Not just after a moderate drive? Before the sputtering, it drives great, which is why Im so confused.


But your fuel filter was full of crap, correct? Is the filter down by the trans or in between the pump and the carbs?


It was in between the pump and carbs, I relocated it behind the firewall when I changed it. Could it be that there was crud in the pump and I just pushed it to my carbs?


Yup, or there's crud in the tank and your new filter is already starting to plug, or your in tank screen is fouled and trying to suck itself shut.
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mastermisery
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PostPosted: Wed Jan 15, 2014 7:04 pm    Post subject: Reply with quote

Possibly, I had the same thing happen with my motorcycle. I had to clean the carbs and installed new jets. I use ethanol remover and fuel treatment in it and it hasn't happened since
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chaosisme
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PostPosted: Wed Jan 15, 2014 7:05 pm    Post subject: Reply with quote

Tram wrote:
chaosisme wrote:
Tram wrote:
chaosisme wrote:
Donnie strickland wrote:
If it "mostly sits in the garage", then I'd suspect fuel problems, i.e. gumming up carb jets and so forth. Sitting is the worst thing for the fuel system, especially nowadays. Try running a bottle of Techron or equivalent fuel system cleaner through it.

You say you've checked pretty much all the normal stuff.


I havent checked the timing yet, because I wasnt sure if it was supposed to be 10BTDC or 7.5, the Old Volks Home site was down but now its back up and its supposed to be 10 degrees.

Not disagreeing with you, but if it were a fuel issue, wouldnt it be manifest the entire time? Not just after a moderate drive? Before the sputtering, it drives great, which is why Im so confused.


But your fuel filter was full of crap, correct? Is the filter down by the trans or in between the pump and the carbs?


It was in between the pump and carbs, I relocated it behind the firewall when I changed it. Could it be that there was crud in the pump and I just pushed it to my carbs?


Yup, or there's crud in the tank and your new filter is already starting to plug, or your in tank screen is fouled and trying to suck itself shut.


I'll pull a carb and check the bowl and check my fuel sock. I have two more questions though.

1. Why does this only happen when Ive been driving the car for awhile?

2. Unrelated, but I said earlier in my post that the distributor rotor doesnt "spring back" when I twist it (like my '68 does). Should the 205G do that or no?
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chaosisme
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PostPosted: Wed Jan 15, 2014 7:08 pm    Post subject: Reply with quote

Also, I was told that if I remove the fuel outlet fitting to change the sock, I should use plumbers teflon tape to seal the threads on the fitting. I have some yellow dryer gas line teflon tape, will that work?
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chaosisme
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PostPosted: Wed Jan 15, 2014 9:54 pm    Post subject: Reply with quote

Pulled my carbs, checked one, it looks clean. There was a small bit of sediment in the bowl but the jets were clear.
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chaosisme
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PostPosted: Fri Jan 17, 2014 1:58 am    Post subject: Reply with quote

Cleaned my carbs out, they didnt seem dirty or crudded up at all.

Also, took my distributor out, cleaned it, checked the points again, and replaced the condensor.

Didnt have a chance yet to check the tank filter (next on the list, got all the stuff I need to do it now)

However, my stalling problem seems to have disappeared. Got it warmed up, drove it around awhile and it didnt want to stall. I'll find out for sure tomorrow when I drive to school/work.

One other thing thats confusing me is that I had to really goof with my linkages because now all of the sudden, the car doesnt want to return to a normal idle (and seemed to be hunting a little bit, but I couldnt find any vacuum leaks). My springs are definitely weak, but I dont see how that would explain the difference between now and a few days ago.
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'70 Westy

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Tram
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PostPosted: Fri Jan 17, 2014 2:05 pm    Post subject: Reply with quote

chaosisme wrote:
Cleaned my carbs out, they didnt seem dirty or crudded up at all.

Also, took my distributor out, cleaned it, checked the points again, and replaced the condensor.

Didnt have a chance yet to check the tank filter (next on the list, got all the stuff I need to do it now)

However, my stalling problem seems to have disappeared. Got it warmed up, drove it around awhile and it didnt want to stall. I'll find out for sure tomorrow when I drive to school/work.

One other thing thats confusing me is that I had to really goof with my linkages because now all of the sudden, the car doesnt want to return to a normal idle (and seemed to be hunting a little bit, but I couldnt find any vacuum leaks). My springs are definitely weak, but I dont see how that would explain the difference between now and a few days ago.


Lube all your linkage pivot points and check your throttle shafts for slop.
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Bryan67 wrote:
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To best contact me, please use the EMAIL function in my profile
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