exaust manifold.
Senior User
Joined: Nov 2009
Posts: 319
Likes: 1
From: Kirkland, WA
Is this what your motor is doing as well?
Can you tell me if you see any soot anywhere around your manifold surface to head area. I looked everywhere I can possilbly get my eyes into but can't see any soot around uppipe connections or manifold to head area.
Cargo Master
Joined: Mar 2006
Posts: 2,502
Likes: 2
From: Bend Oregon
Or try to find a warped set at the ol wreckin yard and have those flattened out.
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Hotshot
Joined: Jan 2008
Posts: 13,144
Likes: 11
From: Rochdale MA
Clay has the coated ones too. You can get a set from him and then send him your old ones as a core.
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Fleet Mechanic
Joined: Jun 2009
Posts: 1,866
Likes: 8
From: Fleetwood, PA
true, good point jim - i think they have to be non warped though.
Cavitation -
It is the exact same symptons i have. no soot little ticks till it warms up. what are your boost readings at WOT
Cavitation -
It is the exact same symptons i have. no soot little ticks till it warms up. what are your boost readings at WOT
Postmaster
Joined: Sep 2007
Posts: 4,005
Likes: 3
From: Mcafee, NJ
I think he is decking them and coating them so that wouldn't be a worry. Let me see if I still have my spare set laying around. Text me and remind me.
Senior User
Joined: Nov 2009
Posts: 319
Likes: 1
From: Kirkland, WA
I take it you are seeing a definite boost number reduction on your gauge you are attributing to the tick/slight exhaust leak, correct?
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Fleet Mechanic
Joined: Jun 2009
Posts: 1,866
Likes: 8
From: Fleetwood, PA
Running stock tune (and everything else) my boost is 16-17 WOT at 3,000 RPMs. No change noted in boost level for me, same numbers as before it started a slight tick just a few weeks ago. I have no tick at IDLE when cold. When starting out cold, the tick sound becomes audible and gets louder with increasing throttle. At first I thought it was a loose rocker or lifter issue but it goes away completely when decelerating and letting off on throttle -- all quiet. It started as a slight tick when cold and within a couple weeks got louder when cold but still goes away completely when engine is hot. It is annoying the $#@% out of me! Sometimes it sounds more like a metallic tick rather than an exhaust leak tick. Tough to tell with all the diesel clatter. Absolutely no uppipe or manifold soot anywhere I can see, I have checked a couple times very closely. Because there is no soot evidence I can find to confirm exhaust leak, and it is not valve train related perhaps piston slap and/or wrist pin noise? I suppose the noise going away when hot means any are possibilities. I’d think that if there was an exhaust manifold leak big enough to make a ticking when motor is cold that you would be able to see some black soot somewhere?
I take it you are seeing a definite boost number reduction on your gauge you are attributing to the tick/slight exhaust leak, correct?
I take it you are seeing a definite boost number reduction on your gauge you are attributing to the tick/slight exhaust leak, correct?
yea thats the same for me. none at idle..just during cold accl.
but nope no soot ANYWHERE i double and tripple check ever time i get annoyed at the thing, lik every day. my boost numbers go to 20lbs, weather i am at 1/2 throttle or 3/4 or 100% dosent matter. 20 lbs once it builds up then just stops.
mike(big poppa) though mabey it was a over boost defuilg thing going on so thats next on my list to do. but the manifold noise drives me crazy.
