Help!!! Evo VIII stalling
#1
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Location: Kingsport
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Help!!! Evo VIII stalling
I'm trying to figure out what is wrong with my 03 evo 8 MR. It is stalling @3000 Rpm WOT 25 Psi, its hopping, cutting in and out. It ran fine at 25-30 psi for 2 years. The AFR is 10:1 when it starts hopping. The wierd part is I can cut it down to 12-15 psi and it runs fine, AFR is correct. There isn't a boost leak. Any ideas?
#3
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how long since you changed your spark plugs?
#8
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It's not a misfire. Sparkplugs are brand new. The ecu isn't throwing any codes. It's literally like the engine just rejects the boost and stops for a second during WOT.
And thanks everyone for your input.
And thanks everyone for your input.
#9
EvoM Community Team Leader
Sounds like you might be hitting a limiter, do you have the tools to data log?
#11
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iTrader: (1)
Pull the plugs and check the ceramic bodies for spark tracking down to the steel body. Under load it will go to ground and cause a big miss.
Fix is to use silicone spark plug boot release on the ceramic ribs, taking care to not get any on where the HT lead connects to the spark plug.
If there is tracking, you can clean it off using a nylon pad. Do this before putting the silicone release materials on the ceramic.
Fix is to use silicone spark plug boot release on the ceramic ribs, taking care to not get any on where the HT lead connects to the spark plug.
If there is tracking, you can clean it off using a nylon pad. Do this before putting the silicone release materials on the ceramic.
#15
EvoM Community Team Leader
what max load are you hitting when you are experiencing cut out?
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