Engine knock/tapping noise, can't figure it out |
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Engine knock/tapping noise, can't figure it out |
Hammy |
Sep 26 2007, 08:19 PM
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#1
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mr. Wonderful Group: Members Posts: 1,826 Joined: 20-October 04 From: Columbia, California Member No.: 2,978 Region Association: Northern California |
My carbed 1.7 has a tap tap tap/knock knock knock noise at idle. It seems to disappear with engine speed but I can't tell if it's just the exhaust noise covering it up. I adjusted the valves using the Capn's procedure and set them all at 1 full turn past contact, engine has hydraulic lifters. Still the same knock/tap noise....
What is it? Is it fatal? This engine has been good to me and I just need it to last a little while longer until I get myself a FI engine hopefully soon... |
Brando |
Sep 26 2007, 09:26 PM
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#2
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BUY MY SPARE KIDNEY!!! Group: Members Posts: 3,935 Joined: 29-August 04 From: Santa Ana, CA Member No.: 2,648 Region Association: Southern California |
There are a few things on these engines that make tapping and knocking noises. Sometimes distinct, sometimes not. Valve tapping noises sound different than crank/rod knocking noises.
Injector ticking different than ignition ticking... etc. First you have to locate where the sound is coming from. I usually use a poor man's stethoscope (long wooden dowel or a long screwdriver with a big plastic handle) and put one end to the engine, the other to my ear. Go around the engine. Heads, case, etc. |
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