Spark rattle @ wot
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Burning Brakes
Joined: Jun 2010
Posts: 812
Likes: 2
From: Metairie Louisiana
Spark rattle @ wot
I'm getting spark rattle under wot accelleration at higher rpms. The car is stock to my knowledge, I bought it used; 2001 6spd 36,000mi, seems well cared for, runs nice with normal temps. I did the zip tie air filt mod with a K&N filter and a motor oil & filter change. Is it typical for these motors to have audible detonation as I have described...what should I be looking at? thanks
Tech Contributor
Joined: May 2008
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From: Howell Michigan
St. Jude Donor '09-'10-'11
Instructor
Joined: Mar 2010
Posts: 220
Likes: 0
From: Deerfeild Fla
I had the exact same problem. Take the car to a GOOD tuner. Mine was running lean at WOT. He did a street tune is what the shop called it and the car runs fine. I also put in a 180 degree thermostat and the tuner reset the fans to come on sooner. The car runs 10 degrees cooler.
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Depending on how it was driven in the past and if it comsumes oil thru the PCV system, you may have a cylinder carbon problem.
Running Chevron Techron Plus in the tank and running a high tier fuel like SHELL Fuel will eventually eliminate the carbon but you can expidite the process by running SEAFOAM thru the intake using the PCV vacuum fitting. I run the RPM up to about 1500. When it's being sucked in thru the vacuum port have someone shut the engine off while its being sucked into the manifold. Allow the seafoam to continue to be drawn into the manifold as the engine is coasting to a stop. If you do ti correctly you will only use about 1/3 of the container. Theres no need to use the entire can.
That will allow raw seafoam to sit in the cylinders and dislove the carbon.
Let it sit over night or a few hours and when you crank it up, it will somke quite a bit and then clear up. That's it.
BC
Running Chevron Techron Plus in the tank and running a high tier fuel like SHELL Fuel will eventually eliminate the carbon but you can expidite the process by running SEAFOAM thru the intake using the PCV vacuum fitting. I run the RPM up to about 1500. When it's being sucked in thru the vacuum port have someone shut the engine off while its being sucked into the manifold. Allow the seafoam to continue to be drawn into the manifold as the engine is coasting to a stop. If you do ti correctly you will only use about 1/3 of the container. Theres no need to use the entire can.
That will allow raw seafoam to sit in the cylinders and dislove the carbon.
Let it sit over night or a few hours and when you crank it up, it will somke quite a bit and then clear up. That's it.
BC
