Knocking noise on a cold start
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Knocking noise on a cold start
I have a 1973 F-100 with 42,000 miles,a 302 engine, and a 2 barrel carb. When I go to start it in the morning the engine knocks for about a minute or so, I was wondering if I should be concerned. I just replaced the fuel pump, if that matters.
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10w-30, and thanks man. I have been reading the forums a long time but just recently started posting, due to the fact that I was encountering problems on my truck that hadn't been posted on here yet, and I didn't know what to do. I inherited it from my grandfather, with only 42,000 miles on it, so far it runs really well besides the turn signals, which is a perplexing issue.
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From: south east kansas
10W-30 sounds good, lean for my taste but i have a 390FE and a 360FE, on my rig the turn signals work but they don't cancel.
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Mine does absolutely nothing. Both the flashers and the bulbs are good, grounds are too, not sure what to do next.
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From: Taxachusetts
As far as the "knock" goes, does it sound like a rod knock? If it is, time for a rebuild. A cam that has a somewhat flat lobe would make a slightly different "knocking" sound. I've had cams that would make a rapping noise upon startup, for a few minutes, then the noise would go away. Also time to pull a few lifters and take a peek at the lifter feet - to see if they're still convex.
How about a piston slap? That won't make a knocking sound but it's clearly audible.
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Thanks filthybeast, whatever the knock was has went away, and cleaning the contacts on the turn signal switch did the trick. The truck had sat for years before I inherited it, so maybe it worked itself out
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cmoore99
1987 - 1996 F150 & Larger F-Series Trucks
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Feb 17, 2004 08:49 PM