My belief is the 'pop' was/is just the car back firing. I started it up
again and it backfired, but the pop came from the engine bay. So, I'm
thinking blown gasket of some sort. There is no coolant loss and there is no
coolant in the oil. There is no MIL, but the engine doesn't run any longer
than a few seconds so all the DTC tests likely have not finished running.
Next I'll check the timing and compression.
Doubtful that it's a timing issue Steve, if this suddenly started. Doubtful
also that it's a gasket problem of any sort. I wouldn't bother testing
compression either. There - did I just screw up your entire plan? Sorry.
If it had low compression, it'd still run. It'd run even if one cylinder
had dropped completely out. The part where it runs up to 4K and then dies
causes me to want to look at a TPS or similar sensor. I'm sure you've
already covered all the basics such as making sure the throttle body is
Sorry - that's all that comes to mind immediately.
Thanks Mike/Shep. It needed the intake manifold gaskets anyways so I figured
now is a good a time as any. I already had the upper intake off when I read
the message from Shep about the PCV, of course I wasn't paying attention
when I yanked that out. Now it's half apart anyways, I'll be getting the
gaskets and injector o-ring kit on Monday.
The TPS sensor crossed my mind. I still have all the old sensors off my old
engine so once I get the new gaskets in I can replace whatever I like if the
new gaskets don't solve it. At this point it doesn't look like the solution
anyways. I didn't bother checking the compression, but I did a quick check
on the timing, only takes a couple of minutes. The timing is fine.
I'll keep you updated.
Got 'er all figured out. Change the intake gaskets. As I was putting it back
together it dawned on me what the original problem was: the brake booster
vacuum line fell off the back of the upper intake manifold. Dummy. Anyway,
all is good.
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