| [ Total Views: 1005 | Total Replies: 8 | Thread Id: 90963 ] |
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 nsuwift
Seriously Crusin Dubber
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| posted on June 10th, 2011 at 06:17 PM |
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type 3 engine problems
Hi having issues with the motor in my type 3. The car is backfiring consistantly and has no power. To check that the distributor is working I removed
plug leads from the distributor one at a time. When the left side leads are removed the motor stalls and stops. When the right leads are removed the
engine continues to run no differently. I susspect possibly a valve. The exhaust is blowing a fair bit of unburnt fuel.
Any ideas as to any other possible causes would be greatly appreciated.
Also who would be the best to work on engine if necessary. Am on a small budget. Have seen engines priced around $4000. Should I expect to have to pay
that much for a rebuild with possible increase in capacity.
I love the car to death but am rapidly losing patience with it being a garage orniment. And am starting to think of going suby power to make it
reliable(really want to stay with vw power though). As it is at the moment it is reliable in the fact that you know its not going to work propperly or
something is going to break.
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bushed
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| posted on June 10th, 2011 at 08:24 PM |
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sounds like an exhaust valve or 2
have u checked adjustments this may help a little...
I hve an engine untested but clean which may be a consideration for you 1970 tp
more info soon.
want any vw bits old but like me, Made in Germany!!!
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Sunset Garage
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| posted on June 11th, 2011 at 01:51 PM |
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In all likelyhood it could be a burnt exhaust valve. But having unburnt fuel going straight through could also indicate a fouled or dead plug.
So before you do a compression check, Spend $20 on some new NGK spark plugs and see if this helps. I have found that both Bosch W7AC and W8AC plugs
have given me problems, I can only assume thay are made in China now.
I had a very similar situation, the engine was way down on power and backfiring every now and then. It also had lots of black smoke and the smell of
unburnt fuel when revved. I'd just fitted it with some brand new Bosch plugs and just assumed it couldn't be the plugs because I'd changed them 2
days prior. turned out the plug in No. 2 had completely died after a few hours of driving.
Anyway it's a quick and cheap job, and it rules out the plugs. worked for me....
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bushed
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| posted on June 11th, 2011 at 03:39 PM |
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ditto Doka
want any vw bits old but like me, Made in Germany!!!
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Sunset Garage
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| posted on June 12th, 2011 at 04:26 AM |
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Thanks Bushed.
Hopefully that's all it is. NGK plugs are really good too.
Never been let down by those little suckers!
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RATAFIED
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| posted on June 20th, 2011 at 06:18 PM |
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witch NGK plugs do you use (what numbers)
cheers
[size=6]RUST IN PEACE[/size] |
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Kombi_Rescue
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| posted on June 20th, 2011 at 06:22 PM |
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sounds like the balance pipe is off at the manifold ...worth checking out
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petitesouris
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| posted on June 24th, 2011 at 03:25 PM |
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yeah... had the same issue for a while then the engine died... get it looked at quickly!
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nsuwift
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| posted on June 25th, 2011 at 08:23 AM |
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Thanks for all the advice sorry about the late reply. I pulled the engine out and the heads off. Found that the ehgine was running hot on the left
side and leaking on the right rear cylinder, a broken ring and a fouled plug. Also one of the heads has some gouges in the combustion chambers. I now
have the top end apart cleaning it ready to put in a new main seal, bought new cylinders and pistons(1641cc I wanted to go to 1776cc but didn't want
to have to get the case and heads machined to suit).I also got a gasket kit and new pushrod tubes. All I need now is a mains seal, tappet adjuster
srews, pushrods and new carbs. Then it can all go back together.
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