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Apr 30, 2003 | 06:37 PM

bud465

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From: Boerne USA

powerstroke problem

I recently installed a BD 3"Down Pipe. Now my truck has a knock like sound when i get into 3rd, 4th, and 5th gear. It won't make noise all the time. Is the fly wheel going out? Whats my problem.

Apr 30, 2003 | 08:08 PM

alanscott

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From: Western Colorado USA

powerstroke problem

Is there enough clearance between the pipe and the firewall? On some of them, the firewall needed to be indented for proper clearance.

Apr 30, 2003 | 08:27 PM

bud465

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From: Boerne USA

powerstroke problem

i cut and bent the fire wall some but i don't think i bent it enough. my concern is if my fly wheel is goning bad. thanks

Apr 30, 2003 | 08:29 PM

PSD_Power

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From: Oregon USA

powerstroke problem

I doupt it is the flywheel after a down pipe. You most likely just need to cut the fire wall more. what year truck is it?

Apr 30, 2003 | 08:29 PM

alanscott

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From: Western Colorado USA

powerstroke problem

You need to be more specific on the sounds your hearing, please mention all the details you can think of.

Apr 30, 2003 | 08:30 PM

bud465

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From: Boerne USA

powerstroke problem

it is a 95 reg cab long bed 2X4

Apr 30, 2003 | 08:38 PM

bud465

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Joined: Oct 2002

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From: Boerne USA

powerstroke problem

it starts off quiet and will get louder depending on speed. its like a vibration that goes to a slight knocking. i don't know how else to describe it. so do yall think it is the down pipe. i think it is because the people i bought the truck from had the clutch and flywheel and the whole works replaced.

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Apr 30, 2003 | 09:05 PM

bud465

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From: Boerne USA

powerstroke problem

no i dont get any at idle either way

Apr 30, 2003 | 09:37 PM

#10

theologian

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From: Baileyton, TN

powerstroke problem

When I power uphill round a right hand bend, my truck sounds like it is dying. The downpipe manages to contact the firewall in that instance, and it sounds like any amount of knocking, because the percussive attitude of the engine is being conducted straight into the cab, rather than out through the exhaust.

I have not bothered to do anything with it, as is a rare but predicable disturbance. If you hear similar sounds after putting in a larger downpipe, then that object is very likely to be the culprit.

Theo