Sputtering engine
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Joined: Feb 2013
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From: Florida
Sputtering engine
I have a 07 FXSTC that Bored to a 103 with 520 cams and a thundermax ECU. Its been 6 months(7000 miles) since the break in. From the get go I experienced pinging and then accelleration issues in 1st and 2nd gear when I got on it. Like a cat chasing it tail, I suspected everything from the rebuild job to the Thundermax settings. Finally, I send a data collection to Thundermax. They quickly sent back a assessment stating I had a fuel issue related to the fuel filter or pump. I changed the filter and BINGO! runs like a scalded dog, no pinging, perfect acceleration, and I get the performance I expected when I had it rebuilt. 6 months of concern all over a faulty fuel filter!
Now, with that being said, if I get on it pior to the engine being nice and warmed up it sputters and bit, every time, but runs great after that. Is this something I need to live with and make sure the engine is fully warmed up pior to getting on the trottle, or is this a sign of something else.
Now, with that being said, if I get on it pior to the engine being nice and warmed up it sputters and bit, every time, but runs great after that. Is this something I need to live with and make sure the engine is fully warmed up pior to getting on the trottle, or is this a sign of something else.
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