tapping sound
Thread Starter
Heel & Toe
Joined: Dec 2012
Posts: 18
Likes: 0
From: Fayetteville NC
tapping sound
today I noticed my car started tapping loudly. The oil pressure is almost 0 at idle and about 30 in motion. Car has plenty of oil too. Also I noticed if I have to accelerate swiftly a loud knocking sound starts. If I gently accelerate I have no issues. I have a laundry list of things to fix...I really hate to add one more to the do now list. Any one have any ideas?
Drifting
Joined: Jul 2011
Posts: 1,697
Likes: 139
From: Syracuse NY
0 PSI at idle? Is the 'knocking' a metallic 'ting' that gets worse with RPM and almost sounds like something from the inside is trying to break out? You my friend may have smoked a lower end bearing. Yep. Time for a total teardown or motor replacement. Sorry to be so blunt, but I had it happen to me. What was worse was the engine (purchased used from a buddy) 'supposedly' only had 30K on a rebuild. It was my first motor swap, had less than 100 miles on it. My oil pressure was the same way, but I thought 'no way do I have 0 pressure at idle, my cheap Sunpro gauge must be wrong.' Then it started.....TANG-TANG-TANG-TANG-TANG.....smoked a crank and end caps on an otherwise decent 4 bolt main.
Good luck.
Good luck.
Racer
Joined: Jan 2006
Posts: 313
Likes: 3
From: North of Boston Ma
Try to locate WHICH piston by having the car running and pulling the spark plug wire one by one off the distributor. Rev the engine up on each one untill you dont hear it anymore.(Thats the one)
Good luck
Good luck
Thread Starter
Heel & Toe
Joined: Dec 2012
Posts: 18
Likes: 0
From: Fayetteville NC
It appears my #4 cylinder isn't firing the header pipe coming off of it was cool to touch while the others were super hot. The oil pressure picked up this morning. Also she is hard to start in the morning.
Thread Starter
Heel & Toe
Joined: Dec 2012
Posts: 18
Likes: 0
From: Fayetteville NC
Yeah the rocker arm came off my number 4 cylinder. Like completely off. I havent started it up since. Hopefully I can seat my push rod and just tighten it back down and adjust the valves. If not I feel it will cost some money or time or both...I have to many items I am working on right now. crazy
Melting Slicks
Joined: Aug 2012
Posts: 2,548
Likes: 379
From: Woodinville WA
the right way to ground spark plugs is with a ground wire attached to a pointed screwdriver... you poke through the insulation to ground out the plug.... or, you can shock yourself
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Drifting
Joined: Jun 2010
Posts: 1,781
Likes: 15
From: Oxford Ohio
Make sure the gauge is correct, no pressure at idle, If that's correct it doesn't matter about the rest, you need to take it apart to see what's going on.
Knocking and no oil pressure is like the doctor telling you you need heart surgery or your gonna be departing soon.
Knocking and no oil pressure is like the doctor telling you you need heart surgery or your gonna be departing soon.
Thread Starter
Heel & Toe
Joined: Dec 2012
Posts: 18
Likes: 0
From: Fayetteville NC
I have decided to break the motor completely down and rebuild it. It is stocked original from the factory. Any suggestions on upgrades cam, carb etc. I plan to keep the same block and head just replace all the worn parts i.e. lifters etc, timing chain etc.