2004 expy wont start.

Little to no compression, bent/ open valves. Does seem strange as Stamp stated, why the fuel problem at first? Did they diagnose it? Or you in the early stages?

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so he said that when I shut it off it may have jumped time and when I tried to start it unknowingly damaged the valves being a zero tolerance motor. the trouble shooting was done at home and with no success I took it to him.


I will say it was low on oil so its probably my fault but it is still weird. running fine to jumping time.

it did have the check engine light on I figured that was from the hollowed out cats. a slight miss (fouled out plugs) I had just had a muffler put on it. (too loud with open exhaust and no cats).

I understand that most people don't know diddly about the cars of today and are at the mercy of the "mechanic". What really gets under my skin is a so called "mechanic" that doesn't justify the diagnosis with numbers to back up his/her claim.

If he had told you the compression range is 150-165 psi and all cylinders are reading 90 psi or lower dry and with an oil shot, those are facts. Backfiring can be an indication of timing issues. To be 100% certain we either take the timing cover off and verify or we hook up a scope and compare signals from the crank and cam sensors. In a sense giving the client a little education on what is going on.

Firing order is calculated by the ecm based on crank and cam positions on cylinder #1 - firing out of order - I'd ask them to explain that one. Waveforms on a scope will/will not verify it.

Bedrck may be coming back in spirit!

Dewd... No new engine till you find out about the fuel pressure. It's kind of like planning open heart surgery when your symptom was constipation.