Rb20 Flooding, Wont Start.

[45LDE]

My RB20 will not start, checked spark ok !

Pulled out first 3 spark plugs and are drenched in fuel.

What would be causing this?

I recently pressure cleaned (with air compressor n carby cleaner) my sard 550cc injectors my self and reinstalled and ran fine until i turned the car off and then i started it again then it started to loose cylinders now i cant even start any more....

[blind_elk]

...I recently pressure cleaned (with air compressor n carby cleaner) ...

Not how the pros do it, so can't say if it's a good idea or not!

[Moodles2]

I agree, worst idea ever. Maybe the carby cleaner left in the injectors took out the oxygen sensor and now it's stuck in full lean mode (0V). Or you've damaged the injectors somehow internally and now they're in fire hose mode.

[45LDE]

Can you start with the O2 sensor unplugged? Seems to be ok on my PFC.

[blind_elk]

Why, oh why, does everyone automatically suspect the O2 sensor for every problem in an RB engine?

ECU ignores the O2 sensor until the engine is up to operating temp and in cruise (constant throttle) mode.

[45LDE]

sweet

[45LDE]

[sOLVED] Sard fuel reg was the problem. Found fuel pumping thru the vac line out of the reg.

New reg installed running on all 6.