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Author
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Topic: Bad Sputtering
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Stangfstbak69
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Member # 5898
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posted
 
 
Help horrible sputtering when driving seems to get better after 3000rpms. Any Ideas? ![[Confused]](confused.gif)
Posts: 49 | From: Benicia | Registered: Aug 2005
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DaveG
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Member # 1606
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posted
Need details on your car. Check for codes. It may be a faulty TPS.
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DaveG
96-0029 S-351
Supercharged Speedster
613rwhp, 633rwtq
Posts: 112 | From: San Jose | Registered: Jul 2002
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SPEC -Fabrication
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Member # 4980
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posted
Bring it by Dave ![[Big Grin]](biggrin.gif)
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1999 Saleen#124
1997 Tahoe
2006 ZX636R
CWS certified welder
Posts: 1321 | From: drinkin BEER! | Registered: Oct 2004
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Curt
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Member # 6254
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posted
Try cleaning your cap and rotor
Then with the car idleing, pull one wire at a time and see if one dosen't make the engine run worse when pulled, if there is one like that test the resistance of the wire, pull the plug and inspect it, if its good re-gap it and put a screwdriver to the injector on the bad cyl and put your ear on the handle, the injector should make a clicking noise
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'90 GT
'94 Toyota 4wd "It have problem"
'56 F100 5.8 AFR185's Vortech SC S-trim
Posts: 866 | From: Monterey/Rocklin | Registered: Nov 2005
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S351-R
CAFords OG
Member # 1605
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posted
Like the above post suggests, it sounds like you may have one or more cylinder misfires. The reason why it seems to smooth out above 3000 RPMS is because the momentum of the engine revolutions will carry it past the misfire. An injector not spraying will cause a lean misfire, but the most common problem is an ignition misfire (plugs, wires, cap, rotor). An easy way to check if the wires are causing the misfire is to spray some water on the spark plug wires with the engine running. If the wires are the culprit, you should be able to see or hear them arc.
Posts: 344 | From: Earth | Registered: Jul 2002
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