Running Out of Puff

[Big Supes]

Currently experiencing an odd issue where, under full throttle, up until I get into 4th gear, everything is fine. A couple of seconds into 4th and it pops with a loss of power. I've only had the balls to keep the throttle open once and it continues to miss badly.

I've changed the fuel pump - about to change the fuel filter. It's had new spark plugs/dizzy cap & rotator arm/HT leads so will check the plug gap tomorrow.

Anything I'm missing? Has anyone else experienced anything similar?


Cheers.

[KEV 5 GT]

is your tdc sensor ok mate

[Tony Walker]

sounds like it may be emptying carb float. an afr gauge would prob be best to monitor it with. what psi are you running?

[KEV 5 GT]

im only running 10psi at the min just sorting my afrs out so i can run 16psi
but i was poping and cutting out the other day and it was a dodgie tdc sensor wire

[Big Supes]

is your tdc sensor ok mate

I couldn't say for sure. It does miss a beat every now 'n then, even on idle.


sounds like it may be emptying carb float. an afr gauge would prob be best to monitor it with. what psi are you running?

Fuel starvation is what it feels like. My last 5 did the same thing when it was running very low on fuel. Currently running 16 psi.

When I have the funds I'll get a afr gauge sorted, but for the time being I was wondering where I could source a probe to go in the bung for the lamba and software to run off my laptop?

[Big Supes]

im only running 10psi at the min just sorting my afrs out so i can run 16psi
but i was poping and cutting out the other day and it was a dodgie tdc sensor wire

Sounds like a suspect! I'll check it out tomorrow. Ta. :agree:

[KEV 5 GT]

ive got an lc1 kit but ur a good run away i dont need softwere on laptop as not needed just sensor and lc1 box does the trick im in need to enlarge the 2nd stage jet but not sure where it is at the min and best way to do it lol...id deffo check you tdc wires out tho seems to be a common fault it seems

[Big Supes]

Cool, thanks Kev. I'll defo have a check tomorrow. I posted some info from the articles on your thread. :agree:

I've never looked into a tune/monitoring software or tool so I'll have to dig around to see what is the most suitable option.

[KEV 5 GT]

yh have a check you never know thanks for the thred just gotta get me head round it lol and get to grips where things are :eek:

[LeeR5GTT]

i had this issue a few years ago.. i needed a new fuel pressure reg :)

[Big Supes]

yh have a check you never know thanks for the thred just gotta get me head round it lol and get to grips where things are :eek:

No probs mate. Will have a check when I can be bothered to get out of bed. :D


i had this issue a few years ago.. i needed a new fuel pressure reg :)

Another candidate added to the list. Cheers Lee. :)

[gttjames]

i had this issue a few years ago.. i needed a new fuel pressure reg :)

did you just fit a new standard fpr or uprated?

[Big Supes]

Any thoughts on this little bugger?

http://www.ebay.co.uk/itm/FUEL-PRESSURE-REGULATOR-TURBO-CARB-ENGINE-RENAULT-5-GT-TURBO-/200916144596?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item2ec78911d4

[gardner51]

I have just orderd mine. Bought from here..

http://item.mobileweb.ebay.co.uk/viewitem?itemId=110985946229&kw=110985946229

Elliott

[gttjames]

I have just orderd mine. Bought from here..

http://item.mobileweb.ebay.co.uk/viewitem?itemId=110985946229&kw=110985946229

Elliott

nice elliott - let us know how you get on

[Big Supes]

I have just orderd mine. Bought from here..

http://item.mobileweb.ebay.co.uk/viewitem?itemId=110985946229&kw=110985946229

Elliott

Sweet. Will jump on this tomorrow. :agree:

[Benjibrady]

did you get a result on the new fpr, i have the same problem in 5th. 25 psi of boost, seems fine through all the gears up until fifth at around 80mph and just gives up. Havent kept my foot in it as i dont want to do any damage.

[GTphil]

25psi in fifth:devil: lol Fifth needs an awful lot of fuel so will defiantly require fuel supply mods at that boost;)

you want a high pressure fuel pump, efi/044 etc and either and adjustable fpr or a rising rate one, from the malpasi range.

If your running a phase 1 pump i have seen even these struggle with that sort of boost:disagree:

[Big Supes]

A big thanks to Elliot (gardner51) for sharing his diagnoses. After PM'ing back and forth, I've replaced the AEI unit and she's good as gold again. Pulls nice and smoothly and doesn't miss a beat now. :)

Cheers fella. :agree::agree:

[gardner51]

Not all down to me mate. Big thanks to marky mark for sorting mine. Top fella!

[TNT ANDY]

Wow - Faulty ECU, suppose they can't go on forever. Good find.

[gardner51]

Thats 2 gone at the Same time! Oh well least their fixed!

[Phaseone]

New poster! (less than 10 posts)

I've started to experience the same problem I'm currently running 22psi ph1 pump original regulator, I have an afr gauge which appears to shoot up to 22 when it happens but I pretty much lift of straight away cus of all the popping and banging etc. Think I'm gonna fit a fuel pressure gauge and see any one got any suggestions for fuel pumps and regs? as I'm looking to run more boost

[gardner51]

I use an efi fuel pump, malpassi fuel reg and I still was getting this problem. Change the aei and runs bang on...


Elliott

[Big Supes]

Wow - Faulty ECU, suppose they can't go on forever. Good find.

It seems both ECU's caught a cold. :D


Thats 2 gone at the Same time! Oh well least their fixed!

Just in time for Santa Pod Sunday and tomorrow night's Surrey Meet. :)

[Markey Mark (BD)]

Looks like some AEI units are coming to the end of there life now then, not going to last forever

Wonder if those rebuild kits the Europeans used are still available as good AEI units will slowly be hard to find

[Big Supes]

Looks like some AEI units are coming to the end of there life now then, not going to last forever

Wonder if those rebuild kits the Europeans used are still available as good AEI units will slowly be hard to find

I didn't have the time to try it first, but it's worth mentioning that I noticed the earthing point for the AEI on the arch was a little loose. It could have been this that caused the problem. As my old AEI has the Armtech rev limiter fitting I may try putting it back on to see if it acts up again with the earth tightened up.