PhilGTR Posted May 21, 2007 Share Posted May 21, 2007 Hey guys, I just got a full service done for my r33 gtr and now i feel that it has lost power and response. So basically i got all the oils changed, fuel filter, spark plugs, etc. The boost seems to be normal and all but there is a noticeable power loss right through the rev range. The only thing it could be is the spark plugs?? But its really smooth. Any ideas??? Thanks Link to comment https://www.sau.com.au/forums/topic/169546-loss-of-power-after-service/ Share on other sites More sharing options...
33SOM Posted May 21, 2007 Share Posted May 21, 2007 Ask if they changed your timing.. Link to comment https://www.sau.com.au/forums/topic/169546-loss-of-power-after-service/#findComment-3133277 Share on other sites More sharing options...
Adriano Posted May 21, 2007 Share Posted May 21, 2007 Agreed, timing, see if they adjusted the handbrake, its a long shot, but not impossible. Link to comment https://www.sau.com.au/forums/topic/169546-loss-of-power-after-service/#findComment-3133292 Share on other sites More sharing options...
Aif Posted May 21, 2007 Share Posted May 21, 2007 did they put the right plugs in? i lost heaps of power because a garage installed the wrong plugs in my r33 gtst, Link to comment https://www.sau.com.au/forums/topic/169546-loss-of-power-after-service/#findComment-3133331 Share on other sites More sharing options...
PhilGTR Posted May 21, 2007 Author Share Posted May 21, 2007 Agreed, timing, see if they adjusted the handbrake, its a long shot, but not impossible. Well i did ask him to check my timing belt, but my car is stock standard? When you remove the cover can u adjust the timing?? Link to comment https://www.sau.com.au/forums/topic/169546-loss-of-power-after-service/#findComment-3133333 Share on other sites More sharing options...
PhilGTR Posted May 21, 2007 Author Share Posted May 21, 2007 did they put the right plugs in? i lost heaps of power because a garage installed the wrong plugs in my r33 gtst, They put platinum plugs in my car. But it definately feels slow Link to comment https://www.sau.com.au/forums/topic/169546-loss-of-power-after-service/#findComment-3133335 Share on other sites More sharing options...
33SOM Posted May 21, 2007 Share Posted May 21, 2007 Well i did ask him to check my timing belt, but my car is stock standard? When you remove the cover can u adjust the timing?? They remove the crank angle sensor to check the belt. So yes if they didnt put it back in the original spot your timing has been changed. Link to comment https://www.sau.com.au/forums/topic/169546-loss-of-power-after-service/#findComment-3133345 Share on other sites More sharing options...
Adriano Posted May 21, 2007 Share Posted May 21, 2007 When they take the cover off, they have to adjust the timing, check the CAS at the front of the exhaust can, and see if the mounting bolt witness marks from where it used to be are different to where it is now bolte.ie: it has been rotated(probably clockwise)from where it previously was. Link to comment https://www.sau.com.au/forums/topic/169546-loss-of-power-after-service/#findComment-3133352 Share on other sites More sharing options...
MrStabby Posted May 21, 2007 Share Posted May 21, 2007 If they used a much thicker and/or cheaper oil than what was in it before that could be the answer, but i'd guess spark plugs are more likely to be the culprit. Find out what plugs and what oil they used, and post it up. Link to comment https://www.sau.com.au/forums/topic/169546-loss-of-power-after-service/#findComment-3133354 Share on other sites More sharing options...
Cubes Posted May 21, 2007 Share Posted May 21, 2007 Well i did ask him to check my timing belt, but my car is stock standard? When you remove the cover can u adjust the timing?? Yes.. If they haven't dropped a timing light on it and guessed where it was prior it may very well be running either less or more ignition. Link to comment https://www.sau.com.au/forums/topic/169546-loss-of-power-after-service/#findComment-3133372 Share on other sites More sharing options...
PhilGTR Posted May 21, 2007 Author Share Posted May 21, 2007 Thanks guys I am going to take my car back tommorrow and get him to look at it and let u guys know Link to comment https://www.sau.com.au/forums/topic/169546-loss-of-power-after-service/#findComment-3133405 Share on other sites More sharing options...
PhilGTR Posted May 22, 2007 Author Share Posted May 22, 2007 Hmm so I asked my mechanic today if he touched the CAS he said no. And he said he put in the same type of platinum spark plugs i had in before. And he reckons it feels good and there is nothing wrong with it. But then sometimes when i drive it, it does feels good and other times it doesnt feel as quick. Maybe its just me paranoid! But I am pretty sure its lost a bit of response down low although the top end feels the same. Could it be the spark plugs not gapped correctly? But he was saying that it would run like crap if they werent gapped properly. Is it possible to adjust the ignition timing without a dyno to give bit better response without damaging my motor? Or maybe i should just accept the fact that its stock standard and the exhaust is restricting it lol. Link to comment https://www.sau.com.au/forums/topic/169546-loss-of-power-after-service/#findComment-3136649 Share on other sites More sharing options...
R31Nismoid Posted May 22, 2007 Share Posted May 22, 2007 Sounds like a bit of paranoia creeping in haha Although, i would be using just a normal set of coppers gapped @ 1.1 for a stock GTR Plati, Iridi etc. Just a waste of coin. The good ole coppers for less than $20 a set win hands down everytime. - You might have a slightly dirty AFM, or loose perhaps. - Maybe the coils dont have a connector on firmly, or similar across the other connectors - A cooler pipe might have a slight leak, although it doesnt sound like that. Basically, anything he needed to remove/touch for a service you need to follow and have that checked. Its just retracing the parts he removed as one of them possibly isnt sitting right/the way it should Link to comment https://www.sau.com.au/forums/topic/169546-loss-of-power-after-service/#findComment-3136670 Share on other sites More sharing options...
PhilGTR Posted May 22, 2007 Author Share Posted May 22, 2007 Sounds like a bit of paranoia creeping in haha Although, i would be using just a normal set of coppers gapped @ 1.1 for a stock GTR Plati, Iridi etc. Just a waste of coin. The good ole coppers for less than $20 a set win hands down everytime. - You might have a slightly dirty AFM, or loose perhaps. - Maybe the coils dont have a connector on firmly, or similar across the other connectors - A cooler pipe might have a slight leak, although it doesnt sound like that. Basically, anything he needed to remove/touch for a service you need to follow and have that checked. Its just retracing the parts he removed as one of them possibly isnt sitting right/the way it should Will coppers make that much difference? I am planning to slap an exhaust on it soon. Well I seem to get good boost response according to the stock guage, full boost a bit before or on 3k rpm i think so i dont think cooler pipe would be loose? I will have a look at my afm, as he did remove my airbox and cleaned my panel filter. Coils havent checked but will open it up and have a look. Link to comment https://www.sau.com.au/forums/topic/169546-loss-of-power-after-service/#findComment-3136696 Share on other sites More sharing options...
R34GTFOUR Posted May 22, 2007 Share Posted May 22, 2007 so did he actually check your timing belt? Cause if he says he checked your timing belt and didnt touch the cas hes talking bs. Pop your hood and have a quick look at the cas, it has three bolts going through it. If you can see marks where the bolts used to be before then you know that it hasnt been set back in its original postion and if hes retarded the timing abit you will notice a difference. Ask him to put a timing light on your car and see what it is set at, if he knows what he is doing it will take less than a minute to do. In saying that, people get paranoid when they hand their car to other people and start "noticing" things that they did see before haha Link to comment https://www.sau.com.au/forums/topic/169546-loss-of-power-after-service/#findComment-3136738 Share on other sites More sharing options...
R34GTFOUR Posted May 22, 2007 Share Posted May 22, 2007 Will coppers make that much difference? I am planning to slap an exhaust on it soon.Well I seem to get good boost response according to the stock guage, full boost a bit before or on 3k rpm i think so i dont think cooler pipe would be loose? I will have a look at my afm, as he did remove my airbox and cleaned my panel filter. Coils havent checked but will open it up and have a look. also how did he clean your filter? is it a k&n filter that he has re-oiled? The oil used on those filters can affect our afms.. Link to comment https://www.sau.com.au/forums/topic/169546-loss-of-power-after-service/#findComment-3136743 Share on other sites More sharing options...
PhilGTR Posted May 22, 2007 Author Share Posted May 22, 2007 also how did he clean your filter? is it a k&n filter that he has re-oiled? The oil used on those filters can affect our afms.. He said he didnt open it up to check my belt. so that hasnt changed at all. I have got a HKS air filter i just had a look and it looks clean and the afm looks good too. The only thing is the spark plugs! because normally i feel the most power come in around 4000rpm and levels out a bit at higher rpms, but now it just feels pretty linear all the way through without the sudden power kick in. Had to explain! Link to comment https://www.sau.com.au/forums/topic/169546-loss-of-power-after-service/#findComment-3136790 Share on other sites More sharing options...
WRRR Posted May 25, 2007 Share Posted May 25, 2007 He said he didnt open it up to check my belt. so that hasnt changed at all. I have got a HKS air filter i just had a look and it looks clean and the afm looks good too. The only thing is the spark plugs! because normally i feel the most power come in around 4000rpm and levels out a bit at higher rpms, but now it just feels pretty linear all the way through without the sudden power kick in. Had to explain! Wild thought - you said AFM (singular) looks ok. You have got 2. If one is playing up the airflow reading to the ECU will be low (averages both). Or maybe a bit of paranoia - now just go check under the bed. Link to comment https://www.sau.com.au/forums/topic/169546-loss-of-power-after-service/#findComment-3142720 Share on other sites More sharing options...
STATUS Posted May 25, 2007 Share Posted May 25, 2007 what grade oil did they fill it with? Link to comment https://www.sau.com.au/forums/topic/169546-loss-of-power-after-service/#findComment-3142749 Share on other sites More sharing options...
evesdropping Posted May 25, 2007 Share Posted May 25, 2007 I always get the same feeling when I get my car serviced. Not just the skyline, but every car I have had. It's weird, the car feels smoother and nicer but slightly slower. I ended up deciding it was all in my mind. it is interesting that you say the same thing. Link to comment https://www.sau.com.au/forums/topic/169546-loss-of-power-after-service/#findComment-3142897 Share on other sites More sharing options...
Recommended Posts
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 accountSign in
Already have an account? Sign in here.
Sign In Now