Timing chain replacement

JOEY 5.0

MEMBER
2001 FORD MUSTANG
4.6L
V8
2WD
MANUAL
144 MILES

One of the guides on the right side gave out broken to pieces. I replaced the timing chain and tensioner along with the guides. Everything looks great, chain and sprocket are aligned but when I try to rotate the crankshaft it locks up half way in both directions. Need help.

3 Replies

ASEMASTER6371

MECHANIC
52,797 POSTS

Good morning,

From the chain failing, you have bent a valve in the motor.

https://www.2carpros.com/articles/how-a-timing-belt-works

You will need to remove the head and replace the valves.

I attached a youtube video of the cylinder head removal for you.

https://www.youtube.com/watch?v=hG9zq2Bm-XA

Roy

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Sunday, August 1st, 2021 AT 6:34 AM

JOEY 5.0

MEMBER
2 POSTS

Okay, I hired a mechanic to check my timing to see if everything was right turns out I put the timing chains backwards if that makes any sense. He managed to rotate it 3 times so I went ahead and built everything up myself and now the car turns on, but now the oil pressure is down on my gauge and the car seems to shut off If I let It idle For about 10 minutes. Or if I stop at a red light. Any advice?

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Monday, August 2nd, 2021 AT 8:33 PM

ASEMASTER6371

MECHANIC
52,797 POSTS

Okay, what is the oil pressure at hot idle and at 1,200 RPMs?

Oil Pressure (Hot 1,500 RPMs) 20-45 PSI

If the pressure is low, it could be the oil pump itself. The pump is behind the timing chains on the nose of the crankshaft. It would mean tearing it down again.

https://www.2carpros.com/articles/high-or-low-engine-oil-pressure

https://www.youtube.com/watch?v=bwJfJ3kJYA0

As far as the idle, I would suspect the idle air control.

https://www.2carpros.com/articles/how-to-replace-an-idle-speed-control-motor-iac

Roy

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