4.6L (1996-2004 Modular) MustangTechnical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within. Sponsored by Cruizin Concepts
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Ok I am at a point where I can either pull the engine in the Stang and replace it with a no miles OEm engine or just tear the front end down and replace the timing chain tensioner.. I think that is what the problem is. The car has a ticking/rattle while idling and driving, it got progressivley worse over the past few months. Now the car needs this fixed and I can either repalce the tensioner or do a total engine swap..
What do you guys think??? ANyone had experince with timing chain tensioners going bad? I love my car and just need it back road worthy. BTW 86k miles on the car.
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the tensioner is an easy fix. also look into getting new guides with a higher mileage car
Yeah just get new guides. The guides have plastic on them so that when the chain passes on them it doesn't make noise. When I put my motor back together the plastic fell off my passanger side guide and now I get a slight tick from the chain passing over it. I'd say just take the timing cover off and replace the guides.
A spun rod bearing would last a few days... or more like hours.... at best! NOT months!
Replace the tensioner.... and the chain while your in there.... and call it a day!
I see that you have never had a supn bearing. I had all of my bearing spun rod and main. I still drove it for a month and even took it to the track (trying to kill the engine). You can roll on a spun bearing for a long time it just gets louder over time.
Spun bearing = tick every rotation of the crank.
Bad tentioner = tick every other rotation
I've never heard of anyone ever spinning ALL of their bearings, not to mantion both rods and mains. That's tough to believe unless you just ran it without oil and got REALLY lucky that it didn't lock up on you completely before they all spun.
ONE spun rod bearing can freeze a motor if things happen the right way. A spun rod bearing is usually a high pitch squeak sound once per revolution. It will get much worse with engine load. It will not last long at allbefore you lose most of your oil pressure.
if you were to spin ALL of your bearings at once, the engine would lock up in 99.99999999% of cases, would have no oil pressure andwould sound like a freight train. If you could drive it like this, you'd probably end up throwing rods due to them binding together or breaking the crank in two from the weird loads and harmonics.
Bearing material will also adhere with the crank journals and make quite a mess and a difficult repair if it's driven much with a spun bearing. Spun bearings are nothing to sneeze at.
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