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If they are next to each other on the same side it could be the head gasket or the head itself between the two. Both have burnt or bent valves but that should give you backfire through the intake or exhaust depending on which way it's going. If it were bad rings, it would be smoking real bad. Any other things that it is doing would help to figure out what the problem is. If the two cylinders are next to each other I would guess head gasket or head. If they are on different sides or not next to each other I would say valves.
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Why does a Chevy 350 have low compression on adjacent cylinders?
If any two adjacent cylinders have low compression it's probably caused by a blown head gasket.
What does it mean if a 1992 Geo Storm misfires badly after it is warmed up like it's firing on only two of the four cylinders?
It could be misfiring on two of the cylinders... Try a compression test first. If compression is low between two adjacent cylinders it might be a head gasket. If compression is up across all cylinders, it might be a coil-pack. The cylinders that AREN'T running should be obvious, since you should see that the sparkplugs are darker, fouled and/or soaked.
How do you know if the head gasket on a 1986 Honda CRX is blown?
look for coolant in the oil and do a compression test. two adjacent cylinders with low compression will indicate a blown headgasket.
If you drive your vehicle with 2 of the 6 cylinders only having 50 combustion how long can you expect the engine to hold up?
not long If you are saying that you only have 50 psi compression on two of the cylinders, then you need to find out why those two cylinders are that low on compression. You may have burnt valves, broken rings, or a blown head gasket. A blown head gasket is very serious and should be repaired ASAP. Stop driving the car until you find out why the compression is low.
Do you have a bad head gasket when you have little compression and car don't start?
It is very possible that you might have a blown head gasket. However, other causes of low/no compression could be a cracked head, a cracked piston, or burnt valves. ANOTHER ANSWER It depends on the way the compression is down. If it's low on two adjacent cylinders, it's probably a head gasket. If it's just one or more non-adjacent cylinders it could also be burned exhaust valves. If it's low on all cylinders it's probably a slipped timing chain/belt.
How can you tell if your head gasket is blown in a 1994 Cadillac concourse?
Look for white smoke from the exhaust and oil and water mixing in the crankcase and radiator. A compression test would identify this also if two adjacent cylinders have low compression.
Why does this Nissan altima only run on two cylinders when it has spark to all four and gas to all four?
You may have a blown head gasket. If you have a compression tester available, check compression on all four cylinders andcompare the readings. If adjacent cylinders read lower compression than the other two, it is likely the head gasket is blown.
How to tell if my engine has a bad valve?
Which kind? Exhaust or intake, run a compression test. A burned valve will show up as low compression on one cylinder. A blown head gasket will often show up as low compression on TWO cylinders. If you suspect a bad PCV valve, jsut replace it as part of the tune-up.
Does engine need to be replaced when there is no compression?
If there is NO compression on any of the cylinders, you've probably slipped the timing belt/chain. Just knowing that there is no compression is insufficient information to make a decision about replacing the engine. You COULD need to have the engine rebuilt, or it's possible that a valve "kissed" a piston and the engine is toast. Or... it could be something else. If it's just low compression in one or two cylinders, it could even be caused by burned or sticking valves.
No compression 2 cyl 94 ranger xlt?
If you have two adjacent cylinders that don't have compression, then there's a pretty good chance that the head gasket is blown between those two cylinders. A crack in the block or head between those two cylinders is also a possibility but it's much more likely to be caused by the head gasket.
Is the head bad if there is no compression or is it the oil pump that operates the lifters on a 1988 323?
No compression on all cylinders would indicate a broken cam belt. i think this motor has hydralic lifter, but for them to cause no compression it would be unlikly. when you say no do you mean none at all or low compression? a broken cam belt could be the cause if all cylinders have no compression. if the cylinders are down it could be bad valve seats (the point of contact between the valve and the head). if it is one or two cylinders it could be cracked head or cracked/broken head gasket. the only other possablilities are broken rings or broken piston. you need to know compression reading of all cylinders in a dry and wet situation. to do this 1:take the compesssion of a cylinder 2:then remove compression guage and squirt two good squirts of engine oil in the cylinder through the plug hole. 3:retake comperssion reading of cylinder. if the compression reading increases you have bad rings, if it doesnt the rings are fine. hope that helped and not confused you Geoff
Weak compression in two cylinders in 1987 ford ranger 2.0 liter?
need to know the compression on a 87 ford 2.3 liter 4 cyclinder
