Question about Volvo S40
Heard it run and had installed now it runs like ****
Posted by Anonymous on
Check firing order , if engine has been stood a while valves may be sticking try putting injector cleaner in the in take when engine is running just a small amount put the rest in the tank
Posted on Feb 10, 2015
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Posted on Jan 02, 2017
burned valve is likely the culprit.... or bad rings.... hook air up to that cyclinder one at a time.... and listen where the air is escaping... be aware that the motor will rotate till the piston is at the bottom of it's rotation. if it's a burned valve you will have to remove the head and replace it but somewhat easier job then replacing the rings. darn almost forgot.... it can also be a blown head gasket.... same procedure but you might need a brush and some soap water to test for an air leak at the side of the head. when you are done spray some wd 40 on it to get the water off so the spark plugs do not arc.
Posted on Sep 26, 2008
Common problem with these engines. Probably has a slight coolant leak at a head gasket causing this problem. Recommend to install reman engine you will save time and money compared to overhauling existing.
Posted on Mar 29, 2009
SOURCE: hyundai accent 2001 -my car is
Yes, I think that the valve is either broken, or the rings are worn out on the cylinder. More likely a bent or broken valve or stuck valve in the open or closed position.
I would use a compression tester, though, to test how much pressure builds up in each cylinder and to see if it is balanced across the remaining cyilinders.
Posted on Oct 02, 2010
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