Still noticing some "valve rattle" after Plenum Fix
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Legend
Joined: Mar 2011
Posts: 8,914
Likes: 4
From: Fredericksburg, Virginia
Still noticing some "valve rattle" after Plenum Fix
Ok guys, took the truck on my runs today, truck runs great, got two problems/issues though.
1) I'm still noticing some valve rattle when it's under load, before I did the plenum work it was real loud and sucked the life out of the truck. Now it really faint and seems to have no effect on power.
Should I shut up and give it a few days or is there something else I should look at?
When we had the valve cover's off we inspected the valve springs and what we could without removing the heads, everything looks in tip top shape.
2) I'm noticing a "ticking", sorta like an injector on steroids but only when I'm on the throttle, I can't hear it at idle. Thoughts?
We did not remove the injectors during repair.
Advice would be appreciated, thanks.
1) I'm still noticing some valve rattle when it's under load, before I did the plenum work it was real loud and sucked the life out of the truck. Now it really faint and seems to have no effect on power.
Should I shut up and give it a few days or is there something else I should look at?
When we had the valve cover's off we inspected the valve springs and what we could without removing the heads, everything looks in tip top shape.
2) I'm noticing a "ticking", sorta like an injector on steroids but only when I'm on the throttle, I can't hear it at idle. Thoughts?
We did not remove the injectors during repair.
Advice would be appreciated, thanks.
Administrator
Joined: Apr 2010
Posts: 87,391
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From: Clayton MI
Run some more seafoam thru the engine. May still have some carbon buildup leaving hotspots in the chambers. (actually, for this particular purpose, water would work just as well. just don't give it much at a time. same procedure as seafoam basically, you just don't need to stall the engine. in fact, you should try and NOT stall the engine.....)
Ticking may be an exhaust leak? If you run the seafoam, the smoke may show you the leak.
Ticking may be an exhaust leak? If you run the seafoam, the smoke may show you the leak.
Thread Starter
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Legend
Joined: Mar 2011
Posts: 8,914
Likes: 4
From: Fredericksburg, Virginia
Run some more seafoam thru the engine. May still have some carbon buildup leaving hotspots in the chambers. (actually, for this particular purpose, water would work just as well. just don't give it much at a time. same procedure as seafoam basically, you just don't need to stall the engine. in fact, you should try and NOT stall the engine.....)
Ticking may be an exhaust leak? If you run the seafoam, the smoke may show you the leak.
Ticking may be an exhaust leak? If you run the seafoam, the smoke may show you the leak.
Before we did the repair I thought I noticed a exhaust leak, kinda like a little "farting noise", thinkin it's coming from the driver side exhaust manifold.
Champion
Joined: Oct 2009
Posts: 4,717
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From: N/A
I think you should run your spark plug wires as per the tsb and fix them so there not all tangled. Running them this way is not good. Pix is from your plenum plate thread.
Last edited by merc225hp; Jan 3, 2012 at 07:55 PM.
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Legend
Joined: Mar 2011
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From: Fredericksburg, Virginia
Veteran
Joined: Aug 2011
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Eh, I have the same issue. My truck is just sick. yours may be the same. Feels down on power and sounds like it's got a bad spark knock. Swiss-cheesing the catalytic converter helped some, but I'm staring down the barrel of a motor replacement.
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Legend
Joined: Mar 2011
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From: Fredericksburg, Virginia
But on a side note, wouldn't that make a great country song
