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rolling road results. Not good!!
- Thread starter ali-ham
- Start date
Well cam timing is one reason, they need the correct locking tools to time right and a lot of normal garages dont have them.
next thing is was it definately at the fly and not at the wheels?
thirdly how accurate is the rolling road? has it been calibrated recently?
also you never know but you have have an internal issue, ie slight leakage from a valve leaking - a compression test will check that
next thing is was it definately at the fly and not at the wheels?
thirdly how accurate is the rolling road? has it been calibrated recently?
also you never know but you have have an internal issue, ie slight leakage from a valve leaking - a compression test will check that
rolling road is spot on, been calibrated very recently, timing also spot on, proper renault tools used and has been checked. Power graph was very smooth, dont have a copy tho! guy reckoned it was overfueling but could that really make such a difference? compression also spot on!!
sorry,
forgot to say the only issue is the lamda sensor heater circuit is not working, possible broken wire therefore the sensor has gone also, causing it to over fuel. could this alone cause such a drop in power??
ITB'd MK1
lambda will definitely effect it noticably. Not by that much though IMO. Cam timing check first off, then if thats right (doubt it) look elsewhere
this. it might grab 5 bhp but not 30. id say if the graph is smooth and the cam timing is ok then id say rolling road is out/not being used correctly or something is a miss - possibly an internal problem.
what i would do is get the timing double checked unless it was done by a known specialist.
then id get it on a different set of rollers.
if read out is still the same id have a compression test done to see if you have any cylinder leakage.
another problem might be vvt isnt working, but is still think it wouldnt loose that much power.
unplugging it showed a loss of 10bhp on my car.
ITB'd MK1
yes, if the pulley has play in it then you wont be able to set the timing accurately
there has been a slight ticking noise coming from the car since the timing belt was done, sounds like tappets but i know these dont give problems. the pulley was not changed as was told this was ok, from reading other posts on the forum i understand that if there is play in the pulley that the 'vibration as such' and subsequent noise can travel along the cam shaft and be mistaken for tappet noise, please correct me if i have taken this up all wrong.
the operator of the rolling road said he noticed the car a little smokey on the run only at higher revs tho. would this come from a fueling problem??
on the vvt, how do i go about checking that is there something to look out for? it does seem to work tho as there is noticable increase in power at approx 5000 - 5200 rpm. would a dephaser pulley with a little play effect the vvt also??
think compression test is next on the cards tho!!!
the operator of the rolling road said he noticed the car a little smokey on the run only at higher revs tho. would this come from a fueling problem??
on the vvt, how do i go about checking that is there something to look out for? it does seem to work tho as there is noticable increase in power at approx 5000 - 5200 rpm. would a dephaser pulley with a little play effect the vvt also??
think compression test is next on the cards tho!!!
^problem number 1 - that doesn't happen
dodgy lambda you say? <problem number 2
who did the belts? <probable problem numero 3
being told "the pulley is ok" <problem number 4 - i just advise to change it to all my customers, but its their decision not mine!
its a bit of a bugger over here in northern ireland because everyone fills you full of confidence with the fact that they are supposed to know what they are doing with 182's. I have saw on here so many times about issues with the timing on these cars. makes me wish i lived across the water where i can be sure i will find a specialist to do my work. Even renault them selves know very little when it comes to these as it was a renault technician who fitted the belts. i enquired about the pulley when it was being done but was told it was fine, their area of expertees not mine. i am bit dissapointed about the rolling road results and a bit annoyed to be honest.
does any one know of a good company over here who could help me out?
fred, could a combination of the timing being out and the lambda broken cause this sort of drop in power? and if it has been running whilst out on the timing can this do any internal harm??
does any one know of a good company over here who could help me out?
fred, could a combination of the timing being out and the lambda broken cause this sort of drop in power? and if it has been running whilst out on the timing can this do any internal harm??
lol!! the way things are over here theyd think you were here to bomb the place, they see someone walking about with a box of tools or with wires and a pair of pliers theyd have a bomb scare for two days.
i think im gona get a few more checks done on the car, cam timing, compression, lambda fault and dephaser pulley checked for play!! see what this brings up!!
Failing that you may get yourself a holiday fred!!! can guarantee the drink but def not the weather!! lol!!!
cheers for the help guys!!
i think im gona get a few more checks done on the car, cam timing, compression, lambda fault and dephaser pulley checked for play!! see what this brings up!!
Failing that you may get yourself a holiday fred!!! can guarantee the drink but def not the weather!! lol!!!
cheers for the help guys!!
a thirsty one
I had a rr run once with a low figure but the graphs looked good, turned out my knock sensor was playing up a bit wasn't showing any fault but once changed gained 20bhp.
MicKPM
ClioSport Trader
Clio16v/Zoe Z.E.50
Are you THAT desperate for a holiday Fred? LMGDAO
Done this kind of thing before - You take exactly what you need and have it security checked before/after.... no drama's!
2003 Clio 172
Fckn right.....Fred can look at my car while he is at it 
( Bring a spare Liver Fred )
Where did you get it done lad?
I had my belts done at Renault (Charles Hurst) and I am STILL adamant that they did it wrong, I am convinced its down on power. Just need someone to confirm that.
However, I did get a RR done at EastCoastCustoms afterwards and they were showing power on the money, which I STILL doubt.
J
( Bring a spare Liver Fred )Where did you get it done lad?
I had my belts done at Renault (Charles Hurst) and I am STILL adamant that they did it wrong, I am convinced its down on power. Just need someone to confirm that.
However, I did get a RR done at EastCoastCustoms afterwards and they were showing power on the money, which I STILL doubt.
J
Evo 5 RS
Bound to be timing but you never know. Blimey when you get that corrected it'll feel like a rocket!
Evo 5 RS
<- watered down yam yam born and raised
Could be valve leakage, Andy's (aka sharky) Trtophy which Ktec (Ahem) carried out an itb conversion on was putting out circa 150bhp before the itbs (Which was apparently normal...) had a bit of a valve leak (2 valves from memory) which TDF sorted out
Id say timing first though
Id say timing first though
2003 Clio 172
You know............my car is a bit of a w**ker too tbh.
I suspect there is more than just the timing going on though and if i thought that Fred would be up for sorting it id be in on getting him over.
Wee things........you know, like it feels slowish but maybe i have gotten used to it. I was concerned when the belts were doen at Renaul under a year ago and i thought it was slow so i sent it back, apparently they checked it and it was fine. 3 days they had the car. THREE DAYS.
Also, when i rev it at a stand still, it almost feels like something is out of balance in the engine. Maybe mounts...not sure
Also, when i rev it (again, at a standstill) at about 2-3k im almost sure i can feel a miss.
Also, my knock sensor output showed a massive spike on RSTuner......Henk when he was here advised that was wrong.
It just feels a wee bit flat......it does spark up at 5k but is it a missile? no.
Oh and just to clear it up, Lambda sensor just replaced with a new one and its just been serviced by me.....the only person i trust right now.
Andy
I suspect there is more than just the timing going on though and if i thought that Fred would be up for sorting it id be in on getting him over.
Wee things........you know, like it feels slowish but maybe i have gotten used to it. I was concerned when the belts were doen at Renaul under a year ago and i thought it was slow so i sent it back, apparently they checked it and it was fine. 3 days they had the car. THREE DAYS.
Also, when i rev it at a stand still, it almost feels like something is out of balance in the engine. Maybe mounts...not sure
Also, when i rev it (again, at a standstill) at about 2-3k im almost sure i can feel a miss.
Also, my knock sensor output showed a massive spike on RSTuner......Henk when he was here advised that was wrong.
It just feels a wee bit flat......it does spark up at 5k but is it a missile? no.
Oh and just to clear it up, Lambda sensor just replaced with a new one and its just been serviced by me.....the only person i trust right now.
Andy
SharkyUK
ClioSport Club Member
^ What Russ said. My car only pulled in the 150's but this seemed normal to the folks that did it... I wish I'd known this was the case (i.e. the low reading) then I would have spent the money fixing this issue rather than allowing them to push on with the ITB conversion. Still not happy. Anyhows, I was running on two healthy cylinders and two very unhealthy cylinders...Could be valve leakage, Andy's (aka sharky) Trtophy which Ktec (Ahem) carried out an itb conversion on was putting out circa 150bhp before the itbs (Which was apparently normal...) had a bit of a valve leak (2 valves from memory) which TDF sorted out
Id say timing first though
Took it to TDF, they sorted it out, tidied up the head, recut valves/seats, etc. remapped for my setup and I saw the best part of a 50bhp increase! As you can imagine the difference was like day and night. Get a compression test done and get Fred over.
Evo 5 RS
You're giving the poor lad nightmares lol
erm you'll have to cover my costs
for example lets say i'm there 2days? £300 inclluding flights, hotel, food etc as a guess
1 car, plus hourly rate = £300 before i touch it
3 cars, plus hourly rate = £100 each before i touch it
just an example, but you get the idea
then i need somewhere to work too, might be a bit of a nightmare to arrange, but i'm available if a few of you club together!
for example lets say i'm there 2days? £300 inclluding flights, hotel, food etc as a guess
1 car, plus hourly rate = £300 before i touch it
3 cars, plus hourly rate = £100 each before i touch it
just an example, but you get the idea
then i need somewhere to work too, might be a bit of a nightmare to arrange, but i'm available if a few of you club together!
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