07 M8 Intermittent cylinder

Kurtschaar12

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07 M8 2500km CPC stage 1 turbo, it's started doing a somewhat random cylinder shut down. Does It more shortly after restarting it, play with the throttle for 30-45 seconds and it takes off like a rocket again? Any suggestions? Watching Pyro in dead cylinder will drop to below 350° doesn't make sense to be power valve but I haven't had time to tear Into it.
 

gibsons

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I had a wire rub through on the fuel rail of my clutch side injector which made it act goofy. 07 m8 as well.
 

mustard73

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I had a chunk of wood stuck in my reed valve that would cause an intermittent issue and cause it to only run on 1 cylinder. Might be worth checking the reeds.
 

c_nelson99

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I also had injector wire issues, heat shield broke under y-pipe and then fuel rail got soo hot it melted wires. The power valves shouldnt effect starting as they don't open till like 6200rpm or something like that. Wonder if its issue with your powercommander or boon docker box?
 

Kurtschaar12

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I also had injector wire issues, heat shield broke under y-pipe and then fuel rail got soo hot it melted wires. The power valves shouldnt effect starting as they don't open till like 6200rpm or something like that. Wonder if its issue with your powercommander or boon docker box?


Ya I'm not sure once I get home I'll tear the bitch apart it's weird how on and off it was.
 

Kurtschaar12

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Just an update: the boost sensor in the fuel box is shot, if you leaned the box one way or the other it would kick the cylinder in and out. I've had echo cycle in Edmonton look over the sled to check other components outside of the turbo system. They gave it the all clear so I've now contacted cpc directly and a new box is on the way. The new boxes no longer have boost sensors they have a map sensor that is more durable. Hope this helps someone!
 
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