Piston Slap, I think.
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Senior Member
Joined: Dec 2000
Posts: 2,365
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From: Elkton, MD
Piston Slap, I think.
When I started my truck last night after sitting in the cold for a few hours I heard a knock in the motor for about 10 minutes. This is the second time in a month. Should I be concerned and get this fixed now? I've heard that it won't hurt the motor, but I'm unsure. It only happens when it's real cold.
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99 Lightning, Bassani exhaust, JL Ram Air, Superchip(JL Programmed), Level 10 shift kit. No ET yet.
Sold- 98 Cobra. FM 2 Chamber, K&N, Steeda Triax, 4.10's, MAC offroad H. Best Cobra 1/4mile 13.8.
Sold- 96 Z28 ATI Procharged 13.5.
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99 Lightning, Bassani exhaust, JL Ram Air, Superchip(JL Programmed), Level 10 shift kit. No ET yet.
Sold- 98 Cobra. FM 2 Chamber, K&N, Steeda Triax, 4.10's, MAC offroad H. Best Cobra 1/4mile 13.8.
Sold- 96 Z28 ATI Procharged 13.5.
If it lasted 10m, I would definately get it checked out.
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Joined: May 2000
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From: Bay Area, CA
Thread Starter
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Senior Member
Joined: Dec 2000
Posts: 2,365
Likes: 0
From: Elkton, MD
It has 16k miles on the odometer. I just bought it used about 600 miles ago.
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99 Lightning, Bassani exhaust, JL Ram Air, Superchip(JL Programmed), Level 10 shift kit. No ET yet.
Sold- 98 Cobra. FM 2 Chamber, K&N, Steeda Triax, 4.10's, MAC offroad H. Best Cobra 1/4mile 13.8.
Sold- 96 Z28 ATI Procharged 13.5.
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99 Lightning, Bassani exhaust, JL Ram Air, Superchip(JL Programmed), Level 10 shift kit. No ET yet.
Sold- 98 Cobra. FM 2 Chamber, K&N, Steeda Triax, 4.10's, MAC offroad H. Best Cobra 1/4mile 13.8.
Sold- 96 Z28 ATI Procharged 13.5.
Member
Joined: Dec 2000
Posts: 26
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From: Phoenix, AZ
Ugh that piston.wav is *EXACLY* what mine is doing but much worse. It's very audible at low RPM idle. When it is between gears while shifting there is a *VERY* loud and noticable pinging noise from the engine while at medium throttle. Mines done it since I got the truck at 18k miles, till now at 25k. The truck is actually in the service department and ford said its a "normal characteristic" of our engines. I honestly do not think this could be good for the engine so I let mine warm up for at least 5 minutes before driving it.
I've got a '99 lightning and SVT says the build number is #264 (not a typo) and was built on 4-15-99. I wish I had more info on the slapping noise..
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99' Red Lightning #264
00' Black Mustang GT
I've got a '99 lightning and SVT says the build number is #264 (not a typo) and was built on 4-15-99. I wish I had more info on the slapping noise..
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99' Red Lightning #264
00' Black Mustang GT
Thread Starter
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Senior Member
Joined: Dec 2000
Posts: 2,365
Likes: 0
From: Elkton, MD
I was told that it's normal when it's really cold to hear the noise with forged internals. I asked them why all Lightning don't do it then. Answer, you haven't caught them at the right time. Mine only does it about 1 out of every like 50 cold starts, but when it does I feel like taking it back to the dealer until they fix it. My Lightning seems to run great, I wonder if there are any adverse effects?
Anyone get their motor replaced because of it?
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99 Lightning, Bassani exhaust, JL Ram Air, Superchip(JL Programmed), Level 10 shift kit. No ET yet.
Sold- 98 Cobra. FM 2 Chamber, K&N, Steeda Triax, 4.10's, MAC offroad H. Best Cobra 1/4mile 13.8.
Sold- 96 Z28 ATI Procharged 13.5.
Anyone get their motor replaced because of it?
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99 Lightning, Bassani exhaust, JL Ram Air, Superchip(JL Programmed), Level 10 shift kit. No ET yet.
Sold- 98 Cobra. FM 2 Chamber, K&N, Steeda Triax, 4.10's, MAC offroad H. Best Cobra 1/4mile 13.8.
Sold- 96 Z28 ATI Procharged 13.5.