Jump to content
SAU Community

Weird Problem Starting R33 Gtst Last Night (Compression?)

JamesK

By JamesK,
in General Maintenance

 Share

Recommended Posts

JamesK Experienced

JamesK

Posted
Posted

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 Grand Master

89CAL

Posted
Posted

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

JamesK Experienced

JamesK

Posted
  • Author
Posted

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 Grand Master

89CAL

Posted
Posted

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 Grand Master

AngryRB

Posted
Posted

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 Grand Master

89CAL

Posted
Posted

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

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • niZmO_Man
      Borg Warner EFR Series Turbo's V 2.0

      By niZmO_Man · Posted

      Not that I know from experience, but in theory you'd want your gate spring to be as close to target pressure as possible, so you'd go with the higher gate spring?
    • Borci88
      Borg Warner EFR Series Turbo's V 2.0

      By Borci88 · Posted

      Before I commit to it as I already have the wastegate off the car, would you change it to the 9psi spring instead of the 12, or whack it back on now and try your suggestion?   Edit: Actually I might just swap the spring and see what the logs say after another few pulls, as we know it's still spiking without the Mac valve in the picture so I need more data without the Mac valve trying to combat the issue.
    • Murray_Calavera
      Steps to DIY sanding car back ready for respray....

      By Murray_Calavera · Posted

      Sounds good Hmm suppose the main thing is, how much do you care about this car? The filler doesn't make for a very good water barrier lol. If there was a tiny little bit of rust forming now, that in 3 to 5 years time becomes obvious under the paint (starts to bubble up), would it bother you? 
    • Kinkstaah
      Mistakes were made, my R34 Story

      By Kinkstaah · Posted

      I already have the ability to datalog the voltage... what I can't do is correlate it to what the gauge is showing when I'm looking at the data at a later date. Or something like this. Except getting the oil to 125C+ involves me going 200+kmh at the track so you can imagine this is a little tricky unless I do something like note what the voltage is when I am at the top of 5th gear so I have a point to reference on. Drove car today. O2 still reading richer because hopefully not a leak instead of massive restriction I've introduced. Car really doesn't sound like a LS. It's quite strange. Pulled a bit of fuel out up top. This does potentially explain why my spark plugs looked like the car was running pretty over-rich. If I was tuning it to a ~12.7 which in reality was far richer than that in the past. It will be handy to have the dyno WB to compare my WB to to compare notes that's for sure. At this point I'm happy to just sit in the passenger seat and tune the thing given I've got about 7 million hours on the platform lol.
    • Chocolate Cheesecake.
      Infiniti Q60 Navigation Update

      By Chocolate Cheesecake. · Posted

      Yeah I understand you have to pay for an updated map or subscription service or something. But I can't even find a current map for Australia. My map is dated 2017, but didn't this car version still sell in Australia until 2021?   Also, just as an aside, the navigation system warns you of traffic incidences ahead.....why would they include that on a map they knew is not receiving live information. I am forever going to be warned of an incident that probably existed for 30 minutes 8 years ago.
×
×
  • Create New...