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Registered
Join Date: Dec 2006
Location: Boise Idaho USA
Posts: 402
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crackling noise
Pelicans,
I get an odd crackling noise coming from the rear of my car, usually under hard acceleration. It almost sounds like crinkling cellophane. Any thoughts? The car is an stock 87 Carrera with 146K miles. Cheers, Nathan
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87 Carrera Coupe Black on Black, H4 Headlights, Nurburgring Sticker |
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05-06-2008, 07:34 PM
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Member 911 Anonymous
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Check your CV Joint Rubber Boots to see if they are cracked, it may be a CV Joint Issue.
Or Rear Torsion Plate? make certain the torsion cover sits in middle of the plate and not touching.
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'85 Carrera Targa Factory Marble Grey/Black * Turbo Tail * 930 Steering Wheel* Sport Seats * 17" Fuchs (r) * 3.4 * 964 Cams * 915 * LSD * Factory SS * Turbo Tie Rods * Bilsteins * Euro Pre-Muff * SW Chip on 4K DME * NGK * Sienes GSK * Targa Body Brace PCA/POC |
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05-06-2008, 10:33 PM
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Make Bruins Great Again
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Are you sure you don't have engine pinging?
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-------------------------------------- Joe See Porsche run. Run, Porsche, Run: `87 911 Carrera |
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05-07-2008, 03:39 PM
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Tired Member
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Quote:
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Glenn Daily Driver - '78 911SC RoW Endurance Racer - '85.1 944 Street/Track Project - '86 951 Race Project - 944 Spec |
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05-07-2008, 05:48 PM
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Registered
Join Date: Dec 2006
Location: Boise Idaho USA
Posts: 402
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Am I sure I don't have engine pinging? Uh, no, I'm not sure. I've never heard pinging that sounded like this though, and don't know why it would ping.
Its a US spec car running on premium gas, in a reasonably good state of tune (as far as I know). I mentioned the sound is usually associated with hard acceleration, key word is usually, not always...
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87 Carrera Coupe Black on Black, H4 Headlights, Nurburgring Sticker |
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05-07-2008, 06:13 PM
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Registered
Join Date: Dec 2006
Location: Boise Idaho USA
Posts: 402
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Am I sure I don't have engine pinging? Uh, no, I'm not sure. I've never heard pinging that sounded like this though, and don't know why it would ping.
Its a US spec car running on premium gas, in a reasonably good state of tune (as far as I know). I mentioned the sound is usually associated with hard acceleration, key word is usually, not always...
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87 Carrera Coupe Black on Black, H4 Headlights, Nurburgring Sticker |
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05-07-2008, 06:13 PM
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Max Sluiter
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Pinging can be hard to detect by ear. One needs a mechanic's stethescope or long screwdriver to hear it sometimes. If you adjust the timing and it goes away, it could be pinging. You could try a bottle of octane booster or a god engine workout to blow out the carbon.
With detonation, the car will run hotter. Any of these symptoms sound familiar?
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1971 911S, 2.7RS spec MFI engine, suspension mods, lightened Suspension by Rebel Racing, Serviced by TLG Auto, Brakes by PMB Performance |
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05-07-2008, 08:46 PM
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Marble Grey
Max
"The Porsche"
Endurance Racer
944 Spec "The green car"
Scalded Cheetah?
1971 Porsche 911S
