Slow/Long Crank After Chevron Techron Fuel System Cleaner

[TWiTCHY]

I followed instructions and diluted the cleaner with more than 15 gallons before driving. The tank was used up without issue. Ever since that tank, I have been getting long cranks. I suspect it has something to do with the fuel purge valve. Anyone have ideas or how to diagnose?

[dparm]

I think it's a coincidence. I've used that in tons of cars (M3 included), as well as similar products like Red Line SI-1, Regane, etc. and there's never been any change in cranking afterward.

[Time Lord]

starter or alt. could be going out. I'm with dparm.

[IIAp3x]

Originally Posted by TWiTCHY

I followed instructions and diluted the cleaner with more than 15 gallons before driving. The tank was used up without issue. Ever since that tank, I have been getting long cranks. I suspect it has something to do with the fuel purge valve. Anyone have ideas or how to diagnose?

Techron is good stuff- it works! Define long crank? Like 4-5 turnovers or more?

[TWiTCHY]

I found a video that's close to what I'm experiencing:

I understand if this is normal, but my car definitely used to start up much quicker before using the fuel system cleaner. Like dparm said, it could just be a coincidence. I should mention that this only happens when the engine is cold. When it is warm, the engine starts right up.

EDIT: Comparison to what it was like (1:16):