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#1 Posted : Thursday, September 20, 2018 1:57:40 PM(UTC)

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The car ran fine in my heat race, but in the feature it would't pass 7,000. It's almost like a rev limiter - it seems to have normal power up to that point. Then it seems to bog down as if fuel is getting cut. I'm running pump gas with a Guhl ECU and Rosson intake. This phenomenon occurs in all gears and neutral. Fuel pressure is normal throughout the RPM range. I am getting spark at all 4 cylinders, valves are clean, air filter is clean. I'm wondering if a sensor went bad in my throttlebody, or maybe I have a plugged injector. Just wanted to see if Mike or Ryan had any thoughts before I started throwing parts at it. Thank you!
Mike Dicely  
#2 Posted : Thursday, September 20, 2018 4:22:59 PM(UTC)
Mike Dicely

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Sounds like a top injector is stuck, clogged, or a connector or wire is broken. The top injectors kick in right around that RPM and the bottom ones shut down. So I would start by looking there.
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