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SGKent 
Samba Member
Joined: October 30, 2007
Posts: 42948
Location: at the beach in Northern Wokistan
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 Posted: Mon Feb 15, 2016 2:22 pm Post subject: Re: My engine runs like it needs another gear |
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| Wildthings wrote: |
| If it vibrates bad when you rev it up at idle then most likely it is a balance issue. If it vibrates only under load it could be anything causing one cylinder to be way weaker than the others. |
expounding on what Mike keyed on - is it dual carb or single carb?
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Skills@EuroCarsPlus:
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ALOHA 72
Samba Member
Joined: August 11, 2015
Posts: 201
Location: Kauai
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| Posted: Mon Feb 15, 2016 7:03 pm Post subject: Re: My engine runs like it needs another gear |
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At this point i just going to take care this engine and start looking for another engine is this engine worth rebuilt?
what size engine will be a good one that we can take camping long roadtrip enough power to take me from point A to B |
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richparker
Samba Member
Joined: November 24, 2011
Posts: 7766
Location: Durango, CO
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| Posted: Mon Feb 15, 2016 7:22 pm Post subject: Re: My engine runs like it needs another gear |
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You should concern yourself with the quality of the parts and the build, not the size.
But...if you can afford a $5-6K engine I would go with a dual carbed, full flow 2L stroker T1 engine. If you click on my name you can look at all my pics and my threads, I cover a lot of miles with mine.
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busdaddy
Samba Member
Joined: February 12, 2004
Posts: 53208
Location: Surrey B.C. Canada, but thinking of Ukraine
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| Posted: Mon Feb 15, 2016 8:32 pm Post subject: Re: My engine runs like it needs another gear |
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I'm curious what the last compression test revealed, engines running on 3 cylinders really struggle to make it over 50 MPH and many can't even recognise what a rough sounding engine is saying or even know it sounds rough.
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ALOHA 72
Samba Member
Joined: August 11, 2015
Posts: 201
Location: Kauai
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| Posted: Mon Feb 15, 2016 11:03 pm Post subject: Re: My engine runs like it needs another gear |
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| i will test the compression first thing in the morning. |
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SGKent
Samba Member
Joined: October 30, 2007
Posts: 42948
Location: at the beach in Northern Wokistan
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| Posted: Tue Feb 16, 2016 8:00 am Post subject: Re: My engine runs like it needs another gear |
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| Quote: |
At this point i just going to take care this engine and start looking for another engine is this engine worth rebuilt?
what size engine will be a good one that we can take camping long roadtrip enough power to take me from point A to B |
That may cost a lot and still not cure whatever you are experiencing. I'd consider establishing what the problem is first. If it turns out it is nothing more than a mis-adjusted set of points, carb, or a bad ignition wire then it will follow to a new engine.
_________________
Canned Water - the new California approved parts cleaner (except in a drought in which case rub it with sand).
George Carlin:
"Most people don't know what they're doing, and a lot of them are really good at it."
Skills@EuroCarsPlus:
"never time to do it right but always time to do it twice" |
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Jeff Geisen
Samba Chaplain
Joined: December 21, 2004
Posts: 1946
Location: N.W. Georgia
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| Posted: Tue Feb 16, 2016 12:24 pm Post subject: Re: My engine runs like it needs another gear |
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Reach around behind the fan shroud (engine off), left side, and feel for a rag or something else wedged into the fan blades.
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ALOHA 72
Samba Member
Joined: August 11, 2015
Posts: 201
Location: Kauai
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| Posted: Tue Feb 16, 2016 2:49 pm Post subject: Re: My engine runs like it needs another gear |
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| Nothing by the fan I took it for a short ride this morning and i shift all the way to 4th gear then i clutch and release the clutch it did not pull back that much so i dont think the engine is working to hard, I notice the shocks are gone maybe a combination of too small of a tire and bad chocks is creating this vibration in the body and i am thinking is coming from the engine? |
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SGKent
Samba Member
Joined: October 30, 2007
Posts: 42948
Location: at the beach in Northern Wokistan
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| Posted: Tue Feb 16, 2016 4:35 pm Post subject: Re: My engine runs like it needs another gear |
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| ALOHA 71 wrote: |
| Nothing by the fan I took it for a short ride this morning and i shift all the way to 4th gear then i clutch and release the clutch it did not pull back that much so i dont think the engine is working to hard, I notice the shocks are gone maybe a combination of too small of a tire and bad chocks is creating this vibration in the body and i am thinking is coming from the engine? |
possibly - if the engine RPM falls the vibration should fall with the RPM and/or load. If not the vibration is somewhere between the transmission and wheels. Lots of things can cause vibration. A rag or baggie in the fan like Jeff suggested will cause it to vibrate at RPM because it throws the fan out of balance. For example - my sunroof being open certain distances will cause my bus to whoop whoop whoop like air going across a whistle.
There is a test at idle that is pretty easy to tell if the engine is performing reasonably Ok. Watching hands, clothes and hair for moving fan belts, you can use a rag to gently remove a plug wire from the distributor cap. The engine will slow down because the wire is removed but it should keep running. When you put it back the engine will speed back up. You pull each wire one at a time and the fall in engine speed should sound nearly the same. If one cylinder falls less then it is weak or not firing.
_________________
Canned Water - the new California approved parts cleaner (except in a drought in which case rub it with sand).
George Carlin:
"Most people don't know what they're doing, and a lot of them are really good at it."
Skills@EuroCarsPlus:
"never time to do it right but always time to do it twice" |
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Tom Powell
Samba Member
Joined: December 01, 2005
Posts: 4852
Location: Kaneohe
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| Posted: Tue Feb 16, 2016 5:04 pm Post subject: Re: My engine runs like it needs another gear |
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| SGKent wrote: |
| ... Watching hands, clothes and hair for moving fan belts, you can use a rag to gently remove a plug wire from the distributor cap. ... |
Rather than a rag, I would recommend rubber fishing gloves, or bamboo tongs, or pliers with vinyl tubing over the jaws.
Too much chance of the rag winding up in the fanbelt and snatching the fingers into the pulley. And too much chance of a shock and knee jerk reaction and puka head.
Aloha
tp |
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Wildthings
Samba Member
Joined: March 13, 2005
Posts: 52718
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| Posted: Tue Feb 16, 2016 5:36 pm Post subject: Re: My engine runs like it needs another gear |
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| Tom Powell wrote: |
| SGKent wrote: |
| ... Watching hands, clothes and hair for moving fan belts, you can use a rag to gently remove a plug wire from the distributor cap. ... |
Rather than a rag, I would recommend rubber fishing gloves, or bamboo tongs, or pliers with vinyl tubing over the jaws.
Too much chance of the rag winding up in the fanbelt and snatching the fingers into the pulley. And too much chance of a shock and knee jerk reaction and puka head.
Aloha
tp |
I usually just use my bare hands to remove the wires from the cap on a point and condenser system. Loosen the wires first with the engine off and then when you pull each wire the wire will become dead, just don't get your fingers close to the cap. Almost have never been shocked doing it this way. Wouldn't dream of doing it bare handed if you have a high output electronic ignition though. You can also buy special pliers just for this purpose.
Remember to reseat the wires fully when you are done.
Don't pull the wires from the spark plugs barehanded if you don't want to be bit though as you will almost be guaranteed of being shocked if you do so. |
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busdaddy
Samba Member
Joined: February 12, 2004
Posts: 53208
Location: Surrey B.C. Canada, but thinking of Ukraine
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| Posted: Tue Feb 16, 2016 5:48 pm Post subject: Re: My engine runs like it needs another gear |
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Good idea loosening them first, I always forget that step  
Doing it bare handed also tells you if you have bad wires, but as mentioned the reflex reaction to the jolt if they are bad may be a problem for a noob, wear some gloves or use pliers with insulated handles.
_________________
Rust NEVER sleeps and stock never goes out of style.
Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here
Stop dead photo links! Post your photos to The Samba Gallery!
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ALOHA 72
Samba Member
Joined: August 11, 2015
Posts: 201
Location: Kauai
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| Posted: Tue Feb 16, 2016 9:53 pm Post subject: Re: My engine runs like it needs another gear |
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I been zap too many times I always use pliers with rubber handles but I will try it in the morning I just install the RPM gauge and is about two bars from 1000
I may have to do a carb adjusting because when is cold it dont want to stay running. |
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Tom Powell
Samba Member
Joined: December 01, 2005
Posts: 4852
Location: Kaneohe
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| Posted: Tue Feb 16, 2016 10:01 pm Post subject: Re: My engine runs like it needs another gear |
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If you loosen them from the distributor before starting the engine you can remove them without pliers. If you touch only the insulated wire you won't get shocked. If you touch the metal clip and somewhere else on the bus you will get a shock. Worst case is leaning against the bumper. 
Aloha
tp |
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Tcash
Samba Member
Joined: July 20, 2011
Posts: 12843
Location: San Jose, California, USA
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| Posted: Tue Feb 16, 2016 11:24 pm Post subject: Cylinder power balance (contribution) test |
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To link to this thread copy and paste
| Code: |
| [url=http://www.thesamba.com/vw/forum/viewtopic.php?p=7983754#7983754]Cylinder power balance (contribution) test[/url] |
Cylinder power balance test.
Place a length of vacuum hose between the Distributor cap and plug wires.
Connect test light ground directly to the battery.
Ground out each cylinder and note the RPM drop.
Each cylinder should have close to the same RPM drop.
Cylinders with little or no rpm drop need further diagnoses and repair.
While you got the Test Light out.
Ignition High Tension Leaks
Last edited by Tcash on Thu Sep 28, 2017 4:57 pm; edited 4 times in total |
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Tom Powell
Samba Member
Joined: December 01, 2005
Posts: 4852
Location: Kaneohe
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| Posted: Wed Feb 17, 2016 1:02 am Post subject: Re: My engine runs like it needs another gear |
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Isn't the ignition voltage going to blow out the 12V test light?
Would a grounding wire or solid core ignition wire be more appropriate to test for cylinder balance?
Aloha
tp |
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ALOHA 72
Samba Member
Joined: August 11, 2015
Posts: 201
Location: Kauai
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| Posted: Wed Feb 17, 2016 9:22 am Post subject: Re: My engine runs like it needs another gear |
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| So i was looking around Samba for anything engine related and i came across heat raiser getting dirty inside and making the engine loose power? well i notice my carburetor was sweating can my heat raisers be clog ? and if they are do i really need to take out the Alternator. |
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ALOHA 72
Samba Member
Joined: August 11, 2015
Posts: 201
Location: Kauai
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| Posted: Wed Feb 17, 2016 9:22 am Post subject: Re: My engine runs like it needs another gear |
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| So i was looking around Samba for anything engine related and i came across heat raiser getting dirty inside and making the engine loose power? well i notice my carburetor was sweating can my heat raisers be clog ? and if they are do i really need to take out the Alternator to remove the raiser. |
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NASkeet
Samba Member
Joined: April 29, 2006
Posts: 3238
Location: South Benfleet, Essex, UK
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| Posted: Wed Feb 17, 2016 9:39 am Post subject: Re: My engine runs like it needs another gear |
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| SGKent wrote: |
My opinion is that the quote below is the symptom he is trying to get an answer to. Even with a 1600 DP and 002 wound out there is no excessive vibration in a bus. My suggestion would be next time he feels the vibration take his foot off the gas and push the clutch in. See if the vibration is still there or if it goes away. If it is still there it is in the driveline which begins with the lug nuts all the way back thru the CV joints. It could be nothing more than loose lug nuts. If this is not what the issue is, I suggest he clarify what it is that he is concerned about.
| Quote: |
| i field the engine vibration inside the bus |
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Vibration or whole-vehicle shuddering, might be associated with a faulty cut-out type rotor arm, which is supposed to cut-out the HT ignition pulses at circa 4,500 rpm, which corresponded almost exactly to 50 mph on my speedometer, in 4th gear. When I experienced said fault, this was happening at only a little above 30 mph, in 4th gear! 
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Wildthings
Samba Member
Joined: March 13, 2005
Posts: 52718
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| Posted: Wed Feb 17, 2016 9:55 am Post subject: Re: My engine runs like it needs another gear |
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| NASkeet wrote: |
| SGKent wrote: |
My opinion is that the quote below is the symptom he is trying to get an answer to. Even with a 1600 DP and 002 wound out there is no excessive vibration in a bus. My suggestion would be next time he feels the vibration take his foot off the gas and push the clutch in. See if the vibration is still there or if it goes away. If it is still there it is in the driveline which begins with the lug nuts all the way back thru the CV joints. It could be nothing more than loose lug nuts. If this is not what the issue is, I suggest he clarify what it is that he is concerned about.
| Quote: |
| i field the engine vibration inside the bus |
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Vibration or whole-vehicle shuddering, might be associated with a faulty cut-out type rotor arm, which is supposed to cut-out the HT ignition pulses at circa 4,500 rpm, which corresponded almost exactly to 50 mph on my speedometer, in 4th gear. When I experienced said fault, this was happening at only a little above 30 mph, in 4th gear! |
What gearing do you have? With my 002 I regularly shift from 3-4th at 50 mph. |
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