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Either your timing is off, or you have other major problems such as a blown head gasket or a cracked block. Ill bet on the timing being off just because it is affecting three cylinders. Do you have the numbers for the compression test?
I’m guessing that is has a V-6 so unlikely to be a head gasket or crack as you’re having problems with both heads. If
You could do a leak down test to see where it’s loosing compression. Also with this test you could identify the timing being off by rotating the engine, and seeing if it holds pressers at another point (this will not necessarily work for a double over head cam with off timing, but will of a single).
If I was doing this work I would skip that test and just start by looking at the timing belt and counting teeth.Okay so I looked up the engine. It seems to be a 3.5L V6, non interfecne, singal over head cam, with a timing belt not chain.
I would take off the oil filler cap and manually rotate the engine and see if i could see the camshaft rotating if possible.
A tech I work with had a Cadillac SRX not that long go with a 3.6L DOHC, primary chain jumped some teeth, he had good compression on 1 or 2 cylinders and hardly anything on the rest. I’d bet that’s the problem.
Quoted From automechanic:
i checked the timing every thing is lined up this is what gots me stumped
I would look into adjusting your valves.
Okay so I looked up the engine. It seems to be a 3.5L V6, non interfecne, singal over head cam, with a timing belt not chain.
Jerry, what reference are you using? I’ve often wondered if there was a comprehensive list, that would tell whether an engine was interference or not….
Yeah that’d be a problem, not sure if it has a timing belt or timing chain, sounds like it jumped some teeth.
Spelunkerd, I just used google. If you type any engine and the word interference in you’ll find it. I wish I had a better way of looking it up, but I don’t know of one.
So for the Chrysler, it’s time to see where the compression is going. It may be a major crack in the block, a crack so large that it effects both sides. It could be two bad head gaskets, or damaged heads.
Is there oil in the coolant or coolant in the oil?Hi automechanic,
What was the compression result in psi for cylinder #2? Also, what were the conditions that led up to this no-start condition? Were you driving the car and suddenly it stopped working? Did you purchase the vehicle this way? Any background on this no-start condition might help.
Also, this might sound dumb (but please don’t take it that way). With regards to the compression test, was a Schrader value used with the hose that connects into the spark plug threads? I have a compression kit and some of the hoses do not have the Schrader value in-line. Again, I know you got a compression reading for cylinder #2, but I just wanted to verify. Just seems very odd that you would not get any compression in the remaining five (5) cylinders.
Keep us posted.
I still want you to do the leak down test.
This is very odd that you have this problem on both cylinder banks.I’m with the leak down test to see where the compression is going however I’m wondering if it’s just flooded. Try starting the engine and holding your foot to the floor on the gas to turn the fuel injectors off, if it starts to catch you might be flooded. If it doesn’t start after a few attempts (don’t crank till you burn your starter up) I would pull the plugs and dry them off if they are wet and leave them out for a bit so that the fuel can evaporate from the cylinders, the ideal would be to leave it sit overnight with the plugs out, this put one squirt of oil in each cylinder, reinstall the plugs, and try starting the engine again by holding your foot to the floor on the gas.
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