Weird Problem Starting R33 Gtst Last Night (Compression?)

[JamesK]

Hey guys, had a bit of a weird problem last night, it seems to be fine now as I drove her to work, but I just wanted to post here and get some opinions.

So it was a bit chilly last night and my R33 was sitting out in the Rain most of the day (took the bike), I go to start it and it turns over normally but quickly dies, thinking I just let off the starter too quick I try again, the starter motor spins much quicker then normal this time along with the engine. It felt like there was little compression in the cylinders so I quickly check the engine bay in case a pipe came off somewhere, it was dark but I didn't really see anything out of the norm. I try again blipping the throttle this time and finally struggles to start, idle was a bit rough for a few seconds and I had to hold the revs for a bit but everything seems ok now. Anyone know what could of caused this? Should I be concerned?

Additional Info:

1995 R33 GTST

8100 X-Cess 5w40

Pretty much stock

PFC Tuned by Trent > 2 years ago

Nismo 3 to 4" pipe

Thanks in advanced

James

[89CAL]

Mine does something similar. Starts fine nearly all the time. But once every so often it has to crank for about 10 seconds and then struggles and idles fine. Starts perfect after that. Not saying that's what your problem is, but it happens with mine. I have an older power fc

[Moodles2]

Cold start in the PFC tune might need attention.

[89CAL]

Cold start in the PFC tune might need attention.

Mine appears to be random. Just seems to not inject fuel then all of a sudden starts then settles down

[R31 POWER]

Same here. Im guessing older pfc. I found pumping the gas while trying to start it the second time helps.

[DVS JEZ]

Could be fuel pump or pressure reg related

[GTR-N1]

Looks like we have a "group buy" of 3 so far, to see DVS JEZ

Any more takers?

[JamesK]

Thanks for all your input guys, she seems all good now but it did worry me a bit, I'm going to do a service today, hopefully it was just a cold day think and probably get her tuned a bit soon. Thanks again!

Looks like we have a "group buy" of 3 so far, to see DVS JEZ

Any more takers?

I'm assuming DVS JEZ is the Trent of NSW?

[89CAL]

Could be fuel pump or pressure reg related

I have a 3 year old Tomei pump and just changed Regs not long ago.

I'm not to sure what it is, wether its just the Power FC showing its age or if its somewhat of a grey area in the tune. I'm not all that worried about it anyawy, new engine will be going in soon, so if it does have any sorts of problems I'm sure that will fix it

[AngryRB]

i had that issue when changing over to ethanol and the cold start enrichment on the power fc had to be played around with , might be that because the car was colder than usual it needed a little bit more enrichment,

you could try increasing the setting for 10degrees so it gets more fuel when really cold.

[89CAL]

I don't think mine has ever been that cold lol. Mineis random. Happens in winter and summer and only like once a month. So its hard to diagnose/try to fix cause it won't do it again for a while

[34GeeTeeTee]

I'm assuming DVS JEZ is the Trent of NSW?

Yes, our resident Guru