I think I hurt the motor.

[CWO]

Leakdown and compression indicated my problem for sure.

How much should someone expect to pay for these two tests?

[Dan03mach]

How much should someone expect to pay for these two tests?

I would figure a couple of hours shop time.

[shumpertdavid]

I would figure a couple of hours shop time.

Compression check on a 03 Cobra shows 1.2 hours book time. You can easily figure that again or more for the Leak down test as you have to put each cylinder on TDC Compression Stroke and test, and repeat on all 8 cylinders. The leak down is more time consuming because of the process to ensure an accurate test.

I own the tools as auto repair is what I do for a living so it's basically my time on my personal stuff.

[Dan03mach]

Compression check on a 03 Cobra shows 1.2 hours book time. You can easily figure that again or more for the Leak down test as you have to put each cylinder on TDC Compression Stroke and test, and repeat on all 8 cylinders. The leak down is more time consuming because of the process to ensure an accurate test.

I own the tools as auto repair is what I do for a living so it's basically my time on my personal stuff.

Yeah the leak down test takes a lot longer for sure. The compression test doesn't take very long at all.

[brandon01rt]

Update: after the tune, plugs, intercooler pump, and ford Gt pumps upgrade the car runs great. The noise I was hearing was just bad detonation.

[KungFuHamster]

Update: after the tune, plugs, intercooler pump, and ford Gt pumps upgrade the car runs great. The noise I was hearing was just bad detonation.

Whew, its a good thing it was just bad detonation. I'm glad it wasn't anything serious. Glad you're up and running again!

[brandon01rt]

Thanks! Im glad it has decent numbers for the mild mods. Not too shabby for almost 100,000 miles

[Blackpony]

detonation at idle???

[DON SVO]

So why was it knocking at idle?

[Dan03mach]

detonation at idle???

lol thats what I was thinking. I've never heard of detonation at idle.


Who in the hell told you it was detonating at idle?

[brandon01rt]

Hell I don't know. I took it in with the noise they replaced everything that I said a couple of posts back, and it's quiet now. HPP charged me to remove the valve cover and they inspected everything with no problems found.

[brandon01rt]

If it was not detonation what else could it have been? The only new parts are spark plugs, fuel pump, and intercooler pump.

[Dan03mach]

If it was not detonation what else could it have been? The only new parts are spark plugs, fuel pump, and intercooler pump.

It could have been just bad plugs but it isn't going to detonate at idle.

[Blackpony]

Glad to hear you got it fixed though!

[brandon01rt]

Thanks man. In a couple more months it gets retired to the garage. Looking at a new F 150 with a 5.0