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  #1  
Old 12-19-2006, 12:53 PM
TTCummins's Avatar
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Location: Ypsilanti, Michigan
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Clicking noise from under hood

When I bought my 1979 300cd it occasionally made this noise that sounded like a relay kicking on and off under the hood. When I started it this morning, it was reaaaallyy cold, it made this noise when ever i was accelerating or maintaining speed, it sounded almost like a machine gun. But as soon as I let off the gas it would stop. Has any body run into something similar or know what the possible cause could be? It seemed to do it a little less when everything was warmed up but it was definitely still there. Any help would be greatly appreciated.

Thanks

Kurt Kiefer

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  #2  
Old 12-19-2006, 11:40 PM
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That almost kinda sounds injector related.....does it run kinda rough or with a slight miss until its warmed up?
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  #3  
Old 12-20-2006, 01:21 AM
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This may seem obvious, but you're sure its coming from under the hood, right?
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Old 12-20-2006, 01:43 AM
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my guess is a lifter tick but i dont know if the lifters tick the same way 603's do.
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Old 12-20-2006, 04:13 AM
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It's an injector, looks like the new cleaner diesel fuel is messing with our old cars.

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