Ping or tick
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Joined: Feb 2004
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Ping or tick
I just bought a 1990 250 pickup with a 351 motor. It idles great and run good until I give it a little gas, like when going up a hill.
At this point i get a tick or ping noise, I am just wondering what could be causing this and what I should do to correct it.
I initially thought it was a lifter, but it would tick while idleing and it doesn't.
any suggestions would be much appreciated.
At this point i get a tick or ping noise, I am just wondering what could be causing this and what I should do to correct it.
I initially thought it was a lifter, but it would tick while idleing and it doesn't.
any suggestions would be much appreciated.
New User
Joined: Oct 2003
Posts: 17
Likes: 1
A small exhaust leak between one of the exhaust manifolds and the cylinder head can sound like a lifter tick.
With my 1990 351W, the tick was audible under moderate load but I had no sound at idle. With the hood up, I could hear a faint tick but only while I revved the engine.
If your situation sounds like mine, try re-torqueing your exhaust manifold bolts, working from the center of the manifold to the edges. If the sound changes while you do this, you will have verified an exhaust leak.
When I removed my driver's side exhaust manifold, the two outside ports showed evidence of leakage because they were heavily coated with carbon. Installing a gasket fixed my problem.
It wasn't a fun job, but I was relieved that it wasn't an internal engine problem.
The advice about timing, egr valve operation, and seafoam would apply if you have a predetonation problem. Predetonation pinging has a higher frequency than a tick caused by a single lifter failure or an exhaust leak.
Hope this helps.
With my 1990 351W, the tick was audible under moderate load but I had no sound at idle. With the hood up, I could hear a faint tick but only while I revved the engine.
If your situation sounds like mine, try re-torqueing your exhaust manifold bolts, working from the center of the manifold to the edges. If the sound changes while you do this, you will have verified an exhaust leak.
When I removed my driver's side exhaust manifold, the two outside ports showed evidence of leakage because they were heavily coated with carbon. Installing a gasket fixed my problem.
It wasn't a fun job, but I was relieved that it wasn't an internal engine problem.
The advice about timing, egr valve operation, and seafoam would apply if you have a predetonation problem. Predetonation pinging has a higher frequency than a tick caused by a single lifter failure or an exhaust leak.
Hope this helps.
