Another Rb25 Misfire Topic

[fmlycar]

New fuel pump in and a new set of plugs again for good measure and you'd never know the was a problem

[fmlycar]

So I gave it a squirt last night. Injector duty still really high but I did notice water temp dropped from 77c to 73c in the space of 300m when I got into it.

[Ben C34]

You are flirting with danger modifying the Injector settings without a wideband.

The fact the coolant temp appeared to drop would mean the ecu would add fuel, probably the problem all along.

No way did the settings in the ecu change by themselves.

[Hadouken]

So when are you buying a new motor?

[fmlycar]

Thats the thing, when I drove it last night nothing had been changed by me. How can the tune go from being fine for months and then all of a sudden be really rich?

Spoke to a workshop in adelaide and he suggested that is has a currupt file. It's getting tuned in 3 weeks so that should clear that up.

Edited August 16, 2015 by fmlycar

[Dose Pipe Sutututu]

or your water temp sensor is cactus... potentially accessing enrichment values from the water temp correction table...

buy a wide band already, it's cheaper than a new motor.

[fmlycar]

Found the problem. Somewhere along the lines the wrong afm was selected. Changed it to the vg30 setting and I'm back in business

[Ke55pig]

Im also on the missfire spluttering chain atmo

Brand new spitfires

Brand new coil loom

Brand new z32

Now its time to look on fuel side of things

Pumps are only 4 years old used like 25 times

Could be fpr

Need to get a fuel pressure Guage

[Hadouken]

And presumably plugs are right and gapped correctly....

[iruvyouskyrine]

Earth engine properly.

[Ke55pig]

Yea right plugs and gapped correctly

Earth straps i have checked but should double check

It only does it after 2 mins of driving as soon as it start to get warm

[Hadouken]

Cas

Dyno

[Ke55pig]

Yea think i going to just spend the coin put it on a dyno and sort it out hmmmm e85 time maybe.... hehe