chain sound
#1
chain sound
I have a strange sound, like a chain or slinky rattling when the truck is idling. Sounds like it is coming from the center of the engine, maybe the fan clutch. Anyone ever heard this and how can I fix it. Thanks
#3
Registered User
I had the heat shield rattling right under the cab of the truck. It would do it only when you closed the door. I noticed that some of push tabs thingys were gone. I made my own and no more rattling.
#4
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Join Date: Aug 2004
Location: Roseville, CA
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Check the clamps that hold the fuel lines that go to the injectors. I had one that came loose and the rattling sounded a light duty chain rattling. They are on the top of the engine by the valve cover on the drivers’ side.
#6
thanks for the response. It is not the heat shield or the fuel line clamps. or detonation. The noise is definately right in the front/middle of the engine. Sounds like it is the fan clutch or other tensioner pulley
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#10
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Join Date: Oct 2007
Location: Mt.Cobb Pa.
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#11
I always thought diesel caused gasoline motors to detonate as it would fire from the compression before reaching tdc. Dont think it can cause detonation in a diesel as it cant get into the cylinder till a few degrees before tdc.
#13
FYI. I got the chain sound diagnosed and fixed. It was the fan clutch support assembly. $500. The bolt that went through the bearing and connected the fan clutch broke and the bearings were rattling and about to come apart.
#14
Just a plain ole guy
Also, why start with an extreme. start with simple stuff. It can be an exhaust bracket.
#15
Registered User
And diesel making a gas engine pre-detonate??
Gasoline is much more volatile than diesel. Putting diesel in a gas engine makes the engine extremely quiet.