Clacking or Clicking Electrical? 1990
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Joined: Jun 2010
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From: Everett Washington
St. Jude Donor '11
Clacking or Clicking Electrical? 1990
I have all new engine and I now hear above the valve covers what can best be described as a tappet noise but it runs pretty much ok. I know I need computer chip work but it almost sounds electrical, "arcing noise" and mostly at idle. Thoughts and advice are greatly appreciated.
: crazy:
: crazy:
Le Mans Master
Joined: Jan 2006
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From: Orlando FL
If you think it is mechanical I would pull the valve covers and have a look.
If you think it is Electrical, check out the wires and hot coil wire in the dark and look for arcing.
Does the noise change with RPM?
If you think it is Electrical, check out the wires and hot coil wire in the dark and look for arcing.
Does the noise change with RPM?
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Joined: Jun 2010
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From: Everett Washington
St. Jude Donor '11
No arcing all new 4 bolt 350
Seems to be a bit quieter with RPM, I m beginning to think it's pinging or pre ignition as the rpm's increase it seems to quiet down (advancing in timing?) I think... too cold and icy here to drive it up to my engine guy and it has half a tank of mid grade gas with one container of octane boost and the gas its 6 months old... this should be a true 9.6:1 compression engine now. Also this now has no egr, no air pump (smog) no what was it spark retarder?? anyway I need to have computer chip tune work done but we want to get some miles on this engine get the gas out etc.
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Joined: Jun 2010
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From: Everett Washington
St. Jude Donor '11
...I'm begining to think I need to move over to scan and tune... I also have a tach that bounces down at around 4000...I am thinking EST wire???? thoughts anyone/everyone.
Burning Brakes
Joined: Apr 2009
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From: Broken Arrow Oklahoma
the tachs on the 90's have some filter that goes bad. Mine reads several hundred RPM's off.
It's been my experience that detonation starts with an increase in rpm's, I have never had one "ping" at an idle.
What type of lifters were used in your new engine?
Rhoades lifters make such a sound at an idle.
It's been my experience that detonation starts with an increase in rpm's, I have never had one "ping" at an idle.
What type of lifters were used in your new engine?
Rhoades lifters make such a sound at an idle.
Burning Brakes
Joined: Jun 2008
Posts: 892
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From: New Smyrna Beach Florida
I have all new engine and I now hear above the valve covers what can best be described as a tappet noise but it runs pretty much ok. I know I need computer chip work but it almost sounds electrical, "arcing noise" and mostly at idle. Thoughts and advice are greatly appreciated.: crazy:
: crazy: