Renault 5 GT Turbo

[R5stevo]

Recently bought r5 turbo which had been sat for a few months, was fine prior to this however now as soon as it tries to boost the car holds back farts and back fires.
Anyone no of common fault that this might be? Have checked actuator arm and feels free not stuck at all. Car runs fine if you dont use the turbo the only other thing i can think of is its either overfueling or cutting out the spark?
Boost is turned down and have played with the mixture which has made a slight difference.
Any pointers would be great thanks

[ToadHall]

try this, it works wonders for the farts.

[R5stevo]

comedian but obviously not as your still lingering aroung....any sensible post greatfully recieved

[Futuramic]

Possibly dirt in the fuel lines, or crap in the tank, if it's been sitting. I have encountered misfires on seldom used cars before, and the problem can usually be traced to either the fuel supply or the ignition system. Degraded HT leads can cause problems at high revs, as can worn rotor arms and coils etc. I replaced the complete ignition system (bar distributor body) on my Ginetta, which had sat and developed a misfire and got perfect running in return for little expense and a morning's work. Otherwise investigate the fuel lines and clean the carb out. Check the fuel filter too.

[R5stevo]

Thanks it was left with very little fuel in so what your saying makes sence, and perhaps where I have filled it up and been running it is why it has got better and in fact nothing to do with what i have adjusted lol. Thanks i will check out ignition system in the morning. Regards

[Bernie-the-bolt]

Futuramic said:

or crap in the tank, if it's been sitting.

I heard of some quick fixes but never realised this was one of them....how do you make sure it doesn't dribble down the paintwork

[paul26982]

plugs, leads, fuel filter, st lying in the tank, all whats been mentioned

[eesbad]

Bit of a long shot, but my mate had a inlet hose degrade after a long sit-up (on a Rangey) - it was fine until the turbo came on song and then the hose flattened and restricted the airflow and the engine stuttered (farted??). New hose and it was as good as new. Worth a look?

[R5stevo]

thanks guys i think thats probably the best place to start apart from that it is sound and starts and drives fine its just when the turbo kicks in it has none of it, my imediated thought was wastegate seized but that was ok.
Will let you know how i get on thanks again

[R5stevo]

thanks eesbad i checked for split hoses but no collapsing ones so will have a look thanks i know the can go porous ater time sat around so good shout mate.

[Mr JP]

These guys know a thing or two about the 5 GTT...

http://www.rtoc.co.uk/

JP

[summers]

Sounds like a blocked jet in the boost circuit, so its not getting enough fuel when it's on boost.
strip the carb and clean the jets out. Mine was very similar after sitting for 6 months, that was down to dirt in the carb.

[Strike_J]

Bernie-the-bolt said:

Futuramic said:

or crap in the tank, if it's been sitting.

I heard of some quick fixes but never realised this was one of them....how do you make sure it doesn't dribble down the paintwork

Haha, classic.

As for the car, you jammy git, always loved Renault 5's (yes even the interior )

[R5stevo]

i removed plugs and they werent too clever cleaned em up and infact made worse, so tomorrow new plugs leads dizzy cap and arm plus fuel filter and clean out the carb as i heard the needles tend to break up. After that if no fix a gallon of fuel and a lighter springs to mind lol jokes

[jjones]

have you tried fresh petrol?

[R5GTTGAZ]

Ignition module has vacuum retard for boosting, check all pipes, module located on bulkhead, if any dump valves / boost controllers fitted check those too and preferably bin them.

They also have a rising rate fuel pressure regulator which is somewhere near to the crank pully IIRC. Very prone to going wrong especially at age.

Edited by R5GTTGAZ on Sunday 19th April 20:28

[R5stevo]

ok this was my thinking....since cleaning up plugs it got worse therefore must be the ignition side of things, so today replaced leads and its now sorted, runs like a dream could do with a tune up but at least its performing now.....thanks guys
ggggrrrrrrrrrWWHOOOOPPPITISHHHHHHHHHHHHHHHHHHH lol

[Cecil]

Could have been contamination from condensation forming in the fuel tank, from when it was left with little fuel.

[Futuramic]

R5stevo said:

ok this was my thinking....since cleaning up plugs it got worse therefore must be the ignition side of things, so today replaced leads and its now sorted, runs like a dream could do with a tune up but at least its performing now.....thanks guys
ggggrrrrrrrrrWWHOOOOPPPITISHHHHHHHHHHHHHHHHHHH lol

Well done. This was exactly the same problem that I had. Leads are a cheap and sometimes overlooked component that make a massive difference to everything. The trouble is degraded ones look the same as a good set.

[seanmcpot]

just trying some new clean fuel could help,check fuel filter see if its full of dirty fuel,mate of mine had the same problem an it turned out the fuel was over 12 month an was full off bits of crap