is this 4.3 motor done?
#1
is this 4.3 motor done?
Everything was fine until I had a sudden loss of power on a mountain road. I continued to drive to town, where it slowly died. It started up the morning after being towed home, but the motor makes a terrible noise. I'm worried it's the crankshaft bearings. I unplugged the spark solenoid so I could hear what it sounds like turning over without combustion. It sounds normal. Wouldn't the crankshaft bearings be noisy even being turned by the starter? I took off the serpentine belt to check all pulleys for grinding or resistance, and found none. This noise is something awful, especially from inside the van with the cover off It sounds like the motor has negligible lubrication. It is definitely not the sound of a starter solenoid failing to disengage.
Any ideas? Thanks!
Any ideas? Thanks!
Last edited by exasperito; September 19th, 2018 at 2:52 PM. Reason: added detail
#4
CF Senior Member
Continued to drive?it's toast,you can't drive it with spark disconnected,so the test is start it,I'm thinking you know the results,stuff happens,time for a project
#5
I never drove it w spark solenoid disconnected, i just turned the engine over while parked so i could listen for the noise with pistons moving but without it running.
Last edited by exasperito; September 19th, 2018 at 4:41 PM. Reason: i had overlooked question
#7
Wouldn't the oil pump failure have manifested as engine seizure that first day? also what of the extremely sudden loss of power just as I was about to accelerate to pass another motorist? Thank you for your input!
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#8
CF Senior Member
When they cool off,movement happens,and about to pass another vehicle?you mentioned,you drove it till it died,that's heat and now you have"awful noise",oil is o.k.,fire it up,idle,no revs,listen,down low,yikes
#9