Running crap
#1
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Running crap
Hey all.
So I had my S4 turbo running a month or so ago and it was idling average and climbing a little every few seconds. I shut it off due to a fuel leak and discovered there was a vacuum line not plugged in which I presume caused the funny idle.
I was missing airbleed sockets in the LIM (causing the fuel leak) so I managed to find a full S5 intake for less than the price of one socket.
So I now have a S5 lower and upper with a S4 throttle body.
I connected it all up the same as before but now its running pretty bad. It idled at about 800 but the motor was shuddering quite a lot and just didn't seem to want to fire properly. I let it run for a minute or so and then gave it a very gentle touch on the peddle get it to 1500rpm. It climbed all right but was still pretty shaky. I had to ease the pedal off otherwise it would drop and stall. I didn't feel comfortable revving it while its like this so I shut if off and here I am.
I have removed emissions and done the throttle body mod. I realise that the throttle body mod will cause it to be a little awkward on start up but I feel that there is something else at play here. Last time when I only had the vac line missing and it was leaking fuel it seemed to idle pretty strong but slightly irregular.
I probably won't have access to it till next week but if I can get some idea of what to look for it would be really appreciated.
TPS was correct when tested before last startup. It should have about 5-10L of fuel, I could hear the fuel pump (which was surprisingly loud).
I have some crappy videos that if I get a chance will upload.
So I had my S4 turbo running a month or so ago and it was idling average and climbing a little every few seconds. I shut it off due to a fuel leak and discovered there was a vacuum line not plugged in which I presume caused the funny idle.
I was missing airbleed sockets in the LIM (causing the fuel leak) so I managed to find a full S5 intake for less than the price of one socket.
So I now have a S5 lower and upper with a S4 throttle body.
I connected it all up the same as before but now its running pretty bad. It idled at about 800 but the motor was shuddering quite a lot and just didn't seem to want to fire properly. I let it run for a minute or so and then gave it a very gentle touch on the peddle get it to 1500rpm. It climbed all right but was still pretty shaky. I had to ease the pedal off otherwise it would drop and stall. I didn't feel comfortable revving it while its like this so I shut if off and here I am.
I have removed emissions and done the throttle body mod. I realise that the throttle body mod will cause it to be a little awkward on start up but I feel that there is something else at play here. Last time when I only had the vac line missing and it was leaking fuel it seemed to idle pretty strong but slightly irregular.
I probably won't have access to it till next week but if I can get some idea of what to look for it would be really appreciated.
TPS was correct when tested before last startup. It should have about 5-10L of fuel, I could hear the fuel pump (which was surprisingly loud).
I have some crappy videos that if I get a chance will upload.
#3
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Haha I actually forgot about that! That may bring the idle up but it still felt very hesitant.
I can't remember if I adjusted the CAS before or after last time. It was REALLY out before I did.
Wouldn't be something to do with air in the fuel lines would it? Seeing has I had the secondary rails off. IIRC I can release the air by opening the fuel cap or something.
I can't remember if I adjusted the CAS before or after last time. It was REALLY out before I did.
Wouldn't be something to do with air in the fuel lines would it? Seeing has I had the secondary rails off. IIRC I can release the air by opening the fuel cap or something.
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