'97 S10 4.3 Liter - Got spark, got fuel, turns over - won't start!
#21
anyone ever heard of collapsed rings or a broken cam shaft due to overheating? I'm going to check compression on all cylinders (except no. 3, which is behind the steering rod). I was talking to a mechanic who was in the parts store tonight. He said the 4.3 liters along with some other motors like subarus, don't hold up well when overheated. The above-mentioned symptoms are the result when over heated. There's also the possibility that if the camshaft breaks, compression will show normal on a few of the cylinders, but nothing on others (front of motor vs. Back).
#22
anyone ever heard of collapsed rings or a broken cam shaft due to overheating? I'm going to check compression on all cylinders (except no. 3, which is behind the steering rod). I was talking to a mechanic who was in the parts store tonight. He said the 4.3 liters along with some other motors like subarus, don't hold up well when overheated. The above-mentioned symptoms are the result when over heated. There's also the possibility that if the camshaft breaks, compression will show normal on a few of the cylinders, but nothing on others (front of motor vs. Back).
#23
so, here's something interesting. It appears that the mechanic who looked at this before i bought it drained the coolant from it. Would no coolant in it cause a no-start situation? Additionally, it appears that the thermostat is stuck wide-open. He did say the thing overheated when it stopped running.
Last edited by dave39; 10-28-2012 at 08:57 AM. Reason: INFO
#24
Back at it
Well, I let it sit for a while and am back at it. I pulled off the distributor cap and everything looks correct. Tab is between 7 and 8 O'Clock. While Turner ng the engine with a wrench, I felt NO COMPRESSION. I tested all holes and they're all dead. So, unless I find a new motor on CL locally for cheap, I'll be rebuilding it. Anything I should know before going into it? I've rebuilt motors before but am looking to do the least amount possible here. Maybe go in from the bottom on an engine stand and replace the rings. Is this wise? Any recommendations or thoughts are appreciated. Thanks in advance!
#25
So I'm going to heed the last responder's advice and check the ignition switch. I don't have the money to throw parts at it until it starts, though I wish I did. One thing that has me curious that it may be the ignition switch is that the headlights don't completely turn off unless the key is turned off. They stay on dim (less than low-beam brightness) even when the light switch is turned off. I understand this also may be the headlight switch itself, or even the relay, but if it is the ignition switch causing this, could it be possible that it's causing the vehicle not to start, too?
#26
#27
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