bad fuel injector
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Well, how do you know you have bad compression ? Did you do a compresson test ? If so, what are the numbers ?
And, a bad injector probably would not cause low compression...but the car certainly would not run good at all.
Need more info.
And, a bad injector probably would not cause low compression...but the car certainly would not run good at all.
Need more info.
I believe low compression could be from bad piston rings, or blown head gasket. I believe there might be more. I also do not see a bad injector causing low compression because to do a compression test one must take out the spark plug, thus no explosion. How low is this compression? Is it just one cylinder?
injectors cannot cause low compression, they are mounted to the intake manifold, they do not seal the combustion chamber.
The combustion chamber is sealed by piston rings, head gasket and valves.
If you have low compression in two adjacent cyclinders it *might* be the head gasket. If you have oil in your coolant, its definitely the head gasket. You'll also get thick white billowing smoke out tailpipe.
If you rings are worn, put a teaspoon of oil in the cylinder and redo the compression check. If the compression jumps up more than 30 psi, the rings are worn.
If you've eliminated the previous two, then it is most likely the valves. Take the car to a dealer and get a leak-down test to confirm this.
The combustion chamber is sealed by piston rings, head gasket and valves.
If you have low compression in two adjacent cyclinders it *might* be the head gasket. If you have oil in your coolant, its definitely the head gasket. You'll also get thick white billowing smoke out tailpipe.
If you rings are worn, put a teaspoon of oil in the cylinder and redo the compression check. If the compression jumps up more than 30 psi, the rings are worn.
If you've eliminated the previous two, then it is most likely the valves. Take the car to a dealer and get a leak-down test to confirm this.
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514 Posts
would a bad injector cause me to run rich? sorry for off-topic, jw
60 psi is very low. Usually worn rings don't lose that much compression. The valves might be floated but I doubt it.
The fact that you've got *very* low compresion in two adjacent cyclinders highly suggests you've got a blown head gasket.
Follow the steps I outline in my previous post to narrow down which of the three it is. If your head gasket is blown, GET IT FIXED AS SOoN AS POSSIBLE. If you get enough coolant leaking into the combustion chamber you can blow the motor.
The fact that you've got *very* low compresion in two adjacent cyclinders highly suggests you've got a blown head gasket.
Follow the steps I outline in my previous post to narrow down which of the three it is. If your head gasket is blown, GET IT FIXED AS SOoN AS POSSIBLE. If you get enough coolant leaking into the combustion chamber you can blow the motor.
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