Intermitent spark knock problem.....
Thread Starter
Safety Car
Joined: Jul 2001
Posts: 3,667
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From: TurtleCreek Twp Ohio
Cruise-In III Veteran
Intermitent spark knock problem.....
My car had been running as good as it ever has. In fact I just recently ran my best time at the track but now I am getting Knock at 3K rpm and above. It happened the day before I went to the strip but went away the same day. then re-appered 3 days later and worse then before. then same night it got better (actually went away) then came back, went away came back on and on. I am wondering if it has anything to do with the granatelli MAF that I put on? I have had it on for about 2K miles with no problem then bam it starts. I had not just added new (read: crappy) fuel, it started at about 1/4 of a tank that I had filled up on.
I'll probably try and put my old MAF back in (without the screen) and see if that helps but why would it just start now????
Thanks in advance for the help. :)
Safety Car
Joined: May 2000
Posts: 4,811
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From: Albuquerque NM
Re: Intermitent spark knock problem..... (Aquaman)
Knocks during the day, not at night? Could be you are right at the edge, and the heat puts you over into knock. I have been chasing my tail trying to tune with LS1 Edit, and determined my knock was bad gas related. :cheers:
Le Mans Master
Joined: Jul 2000
Posts: 5,925
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From: A FEW CLICKS NORTH OF THE CANAL
Re: Intermitent spark knock problem..... (Aquaman)
You might want to check with a GM dealer last time I was there, they told me about a service bulletin relating to a intermittent pinging or knock problem. It was the sensor under the intake manifold on top the valley cover. Might be related might not............ maybe worth a shot.
I would first try higher octane fuel
:cheers:
RAY
I would first try higher octane fuel
:cheers:
RAY
Thread Starter
Safety Car
Joined: Jul 2001
Posts: 3,667
Likes: 0
From: TurtleCreek Twp Ohio
Cruise-In III Veteran
Re: Intermitent spark knock problem..... (6Speeder)
Knocks during the day, not at night?
RHill - Thanks for the heads up on the bulitin I'm off tuesday and maybe I'll have that checked along with my rocking Drivers seat.
Patman36 - I need to do new plugs to go with my N20 anyway so I'll give that a shot as well thanks.
