Engine diagnosis - Crank but no start

1khilari

New Member
5+ Year Member
10 days ago, my engine started making a weird grinding noise from the belts area. Took it to a mechanic and he said it was the AC Compressor Clutch Pulley, but the timing belt and tensioner were fine. Car has 115k miles on it so its due for a timing belt, tensioner, water pump, etc. change anyway. He was charging $700 so I said forget it and would do it myself in the next few weeks.

A couple of days later, I noticed a burning smell every time I would shut off my engine after driving for a bit. It was a very strong smell. I didn't think too much of it. Well a few days ago I started the car and heard a loud squealing from the belt and the engine was really rough and idling really low. I shut it off, but tried a few more times to start the car after that. Same issue. So I left it alone, didn't start it and didn't drive it.

Yesterday, car is not starting. When cranking, it sounds weird as if its really struggling and underpowered. No battery issue and spark plugs didn't seem to be flooded (haven't checked to see if they spark or not).

I'm at a loss. I asked a local friend and he said the timing belt might have skipped a couple of teeth and bent a valve. I opened the head to inspect the timing belt through that little window and it looks okay (i.e. not snapped).

The bottom half of engine seems to be soaked in oil. I don't think it was like that before, but I can't be sure. Any ideas on steps I should take to diagnose it?? Its a 2000 Honda Civic Automatic LX. No check engine light.
 

Joe Mason

Respected
Registered VIP
Sound like maybe the oil pump or oil pump seals failed. I've seen oil pump seals fail and throw oil all over the accessory side of the motor including the exhaust. Makes a bad mess. You need to find where the oil leak source is.
 


1khilari

New Member
5+ Year Member
Sound like maybe the oil pump or oil pump seals failed. I've seen oil pump seals fail and throw oil all over the accessory side of the motor including the exhaust. Makes a bad mess. You need to find where the oil leak source is.
Thanks Joe. Turns out that oil leak was unrelated to the issue. The A/C compressor clutch pulley was seized preventing the engine from cranking. Cut the belt as suggested by a member on another forum and the car was able to get started.

I still have to figure out where that oil leak is coming from now.
 

Joe Mason

Respected
Registered VIP
Excellent! Glad you're running again.
 




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