Tip & How-To about Motorcycles

Carby manifolds leaks.

Too often intake manifolds leak, causing frustrating tuning and is bad for the engine if not fixed. Usually the cause is unseen and unknown and we plough on trying to set the tuning to no avail.

Quite often with round rubber manifolds the clamps themselves are the problem.

A bent, kinked or distorted clamp will not pull tight on the entire surface and subsequently leak. They can bend and kink quite easily when taking off stuck rubber manifolds or when levers are used.

An easy fix that saves a trip to the store is to lightly pean back into shape over a hard curved surface. Use quite a lot of small taps with a striker in a systematic process along the entire length of the band.

Do not straighten the kink near the screw flange as it accommodates the trailing end of the clamp band as you tighten.


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how will a bad map sensor make truck run


that is what it does, it senses the amount of air flow to engine, clean filter, it may be a simple as that

Mar 03, 2015 | 1992 GMC Sierra

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I have unseen coolant loss with no overheating unless coolant gets to low. Can the coolant loss be through the intake manifold gaskets? My vehicle is a 2002 Chrysler 3.8 in a Town and County van (No rear heat)??????? Should I check fo steam cleaned plugs?


it is unlikely that it would be leaking through the intake manifold gasket as such, but loss of water is usually caused by leakage, but they are not always easy to find, depending how much water you are losing as to where it is leaking,sometimes if it is a leaking water hose at the clamp it will only leak when you first start the engine & stop when the engine warms up ( very hard to detect) it could be the head gasket is starting to blow check the exhaust pipe when the engine gets up to normal running temperature to see if there is any steam coming out if so that may well be the problem......hope this helps......cheers.

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Took to inspection code p0171


engine running lean. Usually caused by vacuum leak. If you have a V engine, the failure is usually intake manifold gaskets. If you have inline (4-cylinder), the cause may be intake gaskets or bad or unhooked vacuum hoses attached to the intake manifold. Check all vacuum hoses for cracks or loose connections. Replace any suspect hose. To find manifold gasket leaks, spray ether or carb cleaner on the gaskets with the engine running. If the engine revs at all, you have a leaky gasket and must remove the manifold to replace. Please let me know if you have any more questions.

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so this is my problem....i own a 2004 crown victoria unmarked police unit. it all started when the check engine light came on. i got the code, it said something about the spark plugs. i changed all 8 with ford motorcraft sparlplugs. cylinders 3 and 4 both have oil on them. after cleaning them the oil always ends up back in them turning the check engine light back on. do i need a new head gasket or valve cover gasket...pcv i mean what??? some one help!!! engine misfires obviously


possible bad rings, i would put some motor tune-up in oil will clean carbon off rings, its made by company called seaform and is called motor tune-up, put hole can in oil and drive for about 30 days ,its good stuff can also use in fuel to clean injectors, could also have worn out valve stem seals causing oil to leak pass valves into cyl

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