kyle_in_rure
Full Access Members
Hello all,
Have recently noticed two unfamiliar noises coming from the engine. When it is cold, I hear what I could best describe as a "tapping" sound. It's present at idle and increases with acceleration but goes away totally once it warms up. It's not incredibly loud but I can hear it in the cab.
The second sound also is somewhat like a tapping or clicking. This happens between 2000-3500 RPMs and it reminds me of a Diesel engine. It only happens maybe twice a week or so. Any suggestions on what may be causing this?
It's a 97 EB 4.6. With 220K miles. I use valvoline maxlife 5w20 synthetic. It leaks a about a quart every 1000 miles but I keep it topped off.
Some history:
I was throwing an O2 sensor code over the summer but I cleaned out the throttle body and it never threw another code. The engine also overheated back in August after blowing a heater hose. But there's no head gasket leak.
New plugs and wires at 170K
Thanks all.
Have recently noticed two unfamiliar noises coming from the engine. When it is cold, I hear what I could best describe as a "tapping" sound. It's present at idle and increases with acceleration but goes away totally once it warms up. It's not incredibly loud but I can hear it in the cab.
The second sound also is somewhat like a tapping or clicking. This happens between 2000-3500 RPMs and it reminds me of a Diesel engine. It only happens maybe twice a week or so. Any suggestions on what may be causing this?
It's a 97 EB 4.6. With 220K miles. I use valvoline maxlife 5w20 synthetic. It leaks a about a quart every 1000 miles but I keep it topped off.
Some history:
I was throwing an O2 sensor code over the summer but I cleaned out the throttle body and it never threw another code. The engine also overheated back in August after blowing a heater hose. But there's no head gasket leak.
New plugs and wires at 170K
Thanks all.