Jump to content
SAU Community

Erratic Fuel Issue

teedo

By teedo,
in General Maintenance

 Share

Recommended Posts

teedo Apprentice

teedo

Posted
Posted

hey guys hows it goin?

hope I'm in the right section, anyways I bought a r33 skyline s2 recently =D really happy with it ... but unfortunately I have a few issues... anyways last night when I got home after refilling a full tank I noticed my fuel light just appeared, thinking it would go away I left it there but it hasnt, its still on and I've done like 20km today ... next thing is my fuel gauge appears to be a lil erratic I was sittin on the side of the road for bout 10 minutes with the car running and I noticed that I lost a quarter of the fuel lol skylines arnt that thirsty are they ??? just wondering if any of u guys might be able to point me in the right direction, is it my fuel pump or something ? .... oh another thing is that my idle is a bit high too its around the 900 mark ? I read on the idle adjustment section that it should be around 650 am I right? I had ago at adjusting it but I cant see a idle adjustment on my ecu its just a hole where its meant to be I think and the idle screw under the bonnet is pretty much screwed all the way in now ? hmmmm know I'm askin for a bit much but any help would be greatly appreciated =D thanks ...

Link to comment
https://www.sau.com.au/forums/topic/296012-erratic-fuel-issue/
Share on other sites
mad082 Grand Master

mad082

Posted
Posted

you really need to adjust the idle with the ecu in base idle mode. the reason being that winding in the idle screw on the plenum without the ecu in idle mode doesn't alter the idle that much as the ecu will try to compensate to keep the idle where it is. it would be well worth getting a hold of a consult cable (either borrow off someone who has one, or buy one from newkleer on the forum). you can put the car into base idle mode without a consult cable, but it is much easier with a consult cable hooked up to a laptop as you can also check for fault codes and make sure things like the AFM and o2 sensor are performing properly.

i would wind the screw out a bit so it is about halfway, then put the car into base idle mode and alter the idle from there. it may also be worth cleaning the AAC/IAC before doing this as well.

as for the fuel usage, the fuel gauge sender could be dodgy and giving you false readings. as for the gauge dropping 1/4 of a tank, when you were on the side of the road was the car on a bit of an angle and not level? often if you park on a slope either pointing up or down the hill, or sideways so 1 side of the car is higher then the fuel gauge will change and then once you get back on level ground it will slowly come back to normal after 30 seconds or so. if you actually lost 1/4 of a tank in 10 mins i would've looked in the mirror for someone syphoning fuel out of your tank, LOL

  • 2 weeks later...
teedo Apprentice

teedo

Posted
  • Author
Posted

thanks for the reply much appreciated mad082 =)

I'm lookin into getting the consult cable, saw one off ebay so hopefully that is on the way now... as for my fuel issue, pretty sure noone has been able to come near enough to the car to syphon my fuel I've been watchin it like a hawk since I got it lol well the gauge readings seem to have come clear now, its reading fine I guess its more the consumption side of things I'm worried bout, but I'll wait for the consult cable to readjust the idle, atm I'm lookin around 250km outta a full tank 100km of it was highway driving and the rest city, I'm not sure if that seems right seeing as I came from a honda and that thing was awesome on fuel... only mods I really have are catback exhaust system and k&n panel filter? oh and the fuel light has just totally died on me now, probably the globe doesnt even light up wen I switch to acc on startup ... but I'II get bak after I've replaced the globe =)

footsoulja33 Contributor

footsoulja33

Posted
Posted

Sounds similar to what a problem i had with mine, but mines a series 1 but shouldn't matter as fuel tank/system is the same.

The actual fuel level reader falls off (hard suspension can do this) the braket its mounted on inside the tank and just floats around at the top and gives off mixed reading's. Foudn that out when i replace my fuel pump for a walbro. Would read full tank when full, then 3/4 tank after about 250k's then all of a sudden drop to 1/4 tank. I'm also pretty sure that the fuel level low sensor (the dash light sensor) is attached to the fuel level sensor, so that is prob causing it to be on despite the full tank as the sensor is probably not picking up that the fuel is there due to the whole thing floating round in the tank

Just an idea ;)

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

    • Murray_Calavera
      Jacks that fit under GTR lips that can reach the subframe?

      By Murray_Calavera · Posted

      My dream is also to have a proper hoist, but I don't think it will ever happen. My quickjack is probably as close as I'll ever get, it really is very good though. 
    • Duncan
      Duncan's V37.......race car?

      By Duncan · Posted

      Yeah we keep on in the dailies, it is pretty poor how many animals get hit and the driver leaves without checking....have saved a couple of little ones over the years. Bit of a gruesome job though, pouches generally need to be cut open because they are so tight and often the joey doesn't realise mum is gone so they are still locked onto the teat. I checked the modules in front of the DS wheel where an oil cooler should go.... There is the radar unit - that can go for race use) One of the 2 HX water pumps, the silver cylinder. That needs to be kept but might be able to be relocated But the bad news, the big computer mounted vertically in front of the wheel (blocking any potential air exit) is the electric steering computer. That is required until/unless i do a hydraulic steering conversion, and in CAD based modern car design it is not like I can just pop a big unit like that somewhere else (plus the loom would be too short anywhere else too). So, the passenger side is OK to clear out (just use a smaller washer reservoir, potentially elsewhere), but the DS no beuno
    • Duncan
      Chris' Toyota Mark ii JZX110

      By Duncan · Posted

      Well, all the best with the new camry It was interesting to hear about the UK process, it is generally a lot more streamlined here with a shipping agent looking after all the import side (noting the exact final price can still be a surprise.....) and I've used a few different brokers on the japan (or US) side, and never had any trouble with any of them....luck of the draw I guess. You mentioned you didn't get the auction sheet (understandable since you bought it from a dealer, not auction), but I always try and get hold of that because they are pretty thorough. I've imported 2x R grade vehicles over the years and both were fine, repairs in Japan are pretty thorough compared to here in Oz.
    • Duncan
      Jacks that fit under GTR lips that can reach the subframe?

      By Duncan · Posted

      BTW I measured the jack I have, it is 70mm at the saddle but you only have about 700 until it returns to 150mm high at the cylinder so it is good but no magic bullet.
    • hoodedreeper
      Chris' Toyota Mark ii JZX110

      By hoodedreeper · Posted

      My experience with Rising Sun Exports Before agreeing to the sale I tried to do as much research as I could (obviously), his Facebook reviews are 98% and he goes Live at least once or twice a week. I contacted 2 people in the UK who had used him for their imports, both had positive feedback. His explanation and talk through of the import process was thorough, answering any query no matter how stupid it was. It felt as soon as the money was sent, communication dropped off. I asked for shipping updates every 2 weeks or so, not wanting to pester him, he never had any updates. I wasn't informed the car had been dropped off at the port, I only found out by his Facebook story. I asked for the photos taken at the port, knowing he would need some for insurance purposes. I received a few 5 second clips and that's it. When asked again, he said his staff had them. Weeks later I asked again, he tells me he doesn't have any, but does have 50 photos from the original advert. I never received them. I eventually got the documents sent via WhatsApp after I mentioned the port was requesting them. I purchased a CarVX report, to find out the vehicle is a Grade R with recorded accident damage, first recorded in 2017 when it was first auctioned. He never told me the grade, then again I didn't ask. His response was "Grade R means nothing, it wasn't chassis damage". Still, I would have liked to have been informed about it. Jon prides himself on being open and honest when it comes to inspecting cars, it's his main job doing so at the auctions for customers. When the vehicle arrived in the UK I noticed a few little cosmetic issues. It's a 21 year old car so it wasn't going to be mint condition. The side skirts are cracked on each corner and the sealant is failing. The front grill on the bonnet/hood isn't secured very well, mounting studs are missing. Both minor things, but again, it would have been nice to be told. During a Facebook Live walk around video of the vehicle, he mentioned it has a front Whiteline anti roll bar/sway bar. While on the inspection ramp, I noticed the stock item has been installed. When first questioned, his response was "the ARB? Switched? Since when, it never had them". Since sending video and photo evidence I've not received a response. I'm probably being over critical of the overall condition of an old car, but all I wanted was honesty (which he claims to have). I'm aware I wasn't his only customer, he's busy doing XYZ but other reviews praise him for great communication with regular updates and photos, I felt I didn't receive the same treatment. 
×
×
  • Create New...