WOT, lose spark @ 4.5k rpms
#1
WOT, lose spark @ 4.5k rpms
Any ideas? I can back off the throttle about a quarter of an inch or so and everythings fine but if I floor it, I lose spark. It drives fine otherwise. She's all stock so I'm sure there's plenty of areas for me to look at.
My thoughts are the WG or BPV. I do have an exhaust leak that I havent located...can that do it?
Thanks once again.
My thoughts are the WG or BPV. I do have an exhaust leak that I havent located...can that do it?
Thanks once again.
#5
On the dyno I saw a nice difference between Bosch and NGK
Go for NGK BPR7ES and pinch the tips with needle nose at the centre of the tip so they don't come loose
I'm running a step colder but generally most who use NGK on 951 use BPR7ES.
Go for NGK BPR7ES and pinch the tips with needle nose at the centre of the tip so they don't come loose
I'm running a step colder but generally most who use NGK on 951 use BPR7ES.
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#8
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It sounds like a ignition related problem. Check/replace if needed coil, plug wires, cap, rotor.
Use the Bosch WR6DC plugs (one heat range colder than stock WR7DC).
Use the Bosch WR6DC plugs (one heat range colder than stock WR7DC).
#10
Could it be an issue with the alternator?
Just off the phone with my local parts store and they dont carry Bosch WR6DC/WR7DC and they dont carry NGK BPR7ES. They have some platinum NGK's or NGK 7131 but thats it.
Just off the phone with my local parts store and they dont carry Bosch WR6DC/WR7DC and they dont carry NGK BPR7ES. They have some platinum NGK's or NGK 7131 but thats it.
Last edited by SoulFunkdUp; 06-03-2009 at 08:47 PM.
#15
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Yes sound like you have a bad distributor cap that has unseeable cracks in it which cause this issue and the reference sensors could be adjusted alittle too much out (gap too big) and it looses the reading at higher rpm's