my car has no power at all no missfire new every thing
but when you drive it its just so flat its boosting fine but no power any advise or tips

 

need more info cam, mangement etc

sean

 

car is std apart from air filter exhaust chip and -31 act and a grs front mount

 

did this start after you did something or just appear one day

 

it started at high rpm now its all the time i have fitted new plugs,leads,cam kit,timing belt (timing all correct) new boost hoses new dissy new air temp sensor new head gasket and the list gose on

it is just so flat my 1.2 corsa is now faster

 

have you got a boost guage fitted just wondering if your leaking boost via actuator

 

is the turbo spinning? take the hose off and try to turn the wheel, i had this on mine when it was running, got stuck then freed itself and back to power!!

 

car is boosting fine and holding 16psi through the hole rev range with no faults its like the ingnition timing is out but its not

 

so you're taking the boost gauge for truth? You don't actually KNOW it's boosting?!

 

mate get it setup pronto! could easily be running lean which in the long term (or even the near future) will mean lots of scrap metal were your pistons used to be.

regards


tom

 

also check all your hoses as a burst one or slack ones would also cause problems

 

i had this problem, well identical symptoms and i swapped the fuel injectors and its been fine since.

 

it has new injectors new samcos i would get it set up but i cant get it there its has boost with no faults its like the timing is so far retarded but its set to 12* btdc i need advise to get it running semi-o.k so i can get it to the rolling road as the nearist one is 80 or so miles away

 

hi,how about the fuel pump,i know that if your fuel pump is on the way out it will not work properly on acceleration,yeah it will still cruise but when you put your foot down you will have no power.

 

new fuel pump and filter and injectors and fuel lines every thing is new

 

slight chance is cam's worn out and valves not opening properly and thats why its got worse as cam lobes have got worse

 

see spark plug colour I have problem with my, to lean, mixure was 15:1 at boost, look if cambelt snapped maybe

 

new cam kit , plug colour is spot on co set up to every thing is new on it
every thing from block up is brand new inc cam belt and cam kit i just dont no going to set fire to it soon

 

Had the same on my s2 a couple yrs ago, turned out the dizzy was shagged, timing set to 12 ect but felt retarded! New dizzy then all was well again

 

i had this prob a few weeks bk my car was boosting fine holding 16 17 psi same as u it was like driving an xr3i but worse, alterd the timing slighty and away she went like it shoud be doing but now with the power increase my pissing clutch is slipping

id try it mate it worked 4 me

 

could be a faulty knock sensor which is retarding your timing (green plug on right side of manifold)

or it could just be that your ignition timings to retarded (you see its boosting fine but its low on power and not pulling very well )

 

A few options, that might help.



- Comp, and leak down test?
- Pressure test boost system for leaks, and test your gauge.
- Cam timing (not ignition) could be 1 tooth out, = full boost but lack of power.
- Ex housing cracked on turbo? or wastegate sticking/leaking?
- Fueling pressure and flow check?
- could be ECU or Metering unit or sensor?
- under load timing and fueling check?
- spark plug gap?