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 Prodrive EFI E2 intake backfire 
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Post Prodrive EFI E2 intake backfire
Experiencing backfire inside the intake. Anyone had this happen before. Motor is 2013 36hp with the Prodrive EFI E2 kit.

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Sun Oct 15, 2017 9:55 am
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Post Re: Prodrive EFI E2 intake backfire
Valve seats seating properly?


Sun Oct 15, 2017 2:56 pm
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Post Re: Prodrive EFI E2 intake backfire
Valve lash set correctly?

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Sun Oct 15, 2017 4:59 pm
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Post Re: Prodrive EFI E2 intake backfire
As they said and while your checking the valves make sure you have full travel of rockers,,'meaning the cam isn't flat


Sun Oct 15, 2017 7:14 pm
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Post Re: Prodrive EFI E2 intake backfire
Is a compression test the only way to check if the valves are seating properly? Anyone in the Gonzales/Prairieville area have the tools to do it?

I checked the valve lash using instructions on the BPS website, all set at 0.005. By rotating the flywheel all rockers appear to moving like they are supposed to.

Could intake gaskets be a cause? Is there a good way to check this?

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Mon Oct 16, 2017 5:57 am
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Post Re: Prodrive EFI E2 intake backfire
Yes an intake gasket can do it. Remove cowling and inspect around where the intake bolts to heads for a missing piece of gasket. A leakdown tester is used to check for valve seal


Mon Oct 16, 2017 8:02 am
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Post Re: Prodrive EFI E2 intake backfire
Intake gasket leak or intake VALVE leak. Typically the culprit of a lean pop/cough out the intake

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Thu Oct 19, 2017 9:16 am
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