Quote:
Originally Posted by blue62
These are interference engines.
If you have broken valve springs then there is a very good chance that the piston has contacted those valves.
So the valve stems on those valves could be bent or there could be damage to the valve guides, and or damage to the valve seats.
The only way you are going to know if there is damage is to remove the head and have it checked out by a good machine shop.
You may have dodged a bullet and can save that engine.
Pull the head and have a automotive machine shop examine the head and check specs.
That is the prudent thing to do.
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I did another borescope (at home). no contact with the piston, no seat damage. i was able to wiggle it around just enough to get a good look at the seat and it looked good.
Honestly at 124k miles, i’d rather start saving for a new or upgraded motor. I thought about pulling the head, but the borescope answered questions i had. The spring broke in such a way that it wouldn’t return fully, but it wouldn’t go in far enough to hit anything either. No damage to any piston.
I think that cylinder one was “dead” because the ecu went into some kind of mode or just couldn’t compensate for the one cylinder with zero compression.
I’m trying to decide now if i should replace all 24 springs, just the springs on bank one, or just the one spring. they look okay, but if one broke, others might soon follow. replacing all the springs and getting it back on the road is worth it to me. Any thoughts on that or good while you’re in there’s are welcome
I do love this car so spending the money for a new engine down the road doesn’t bother me. i just don’t have that kind of cash right now
