Ok I have searched, troubleshot from the book over and over again. Still cannot figure this out. I have seen post where others have had the same issue and then they will say they fixed it but never say exactly what the issue is.
I rebuilt the entire engine with jp 8:1 pistons, eagle rods all the good stuff. I also have BC stage 2 cams with a stock head and valve train but machine shop looked everything over and it was all good. I removed the charcoal canister and installe all the correct block off plates and did it all properly. I have the breather's on top of the valve covers currently until I come up with another system. I got it all installed got the car to start and ever sense it will not idle when car is warm. At a cold start up the car will idle at 1000rpm's and once it gets warm it tries to stay idleing but will die. So I went through the steps. I check tps sensor and all values are good. There not very adjustable friendly though, they either seem to all be within limits or way off. so then I moved to the afm and that seems to be testing fine also. My next thing was to clean out the IAC valve. I did that and reinstalled it and then again the car was fine a cold start up but once warmed up it then jumped from 1000 to 1600 erratically. I had an extra iac valve and installed that and now it back to the old problem again. I checked for vacuum leaks and have not yet found any at all. I checked around the injectors, around intake mani, all vacuum hoses and nothing. I checked injectors and I can hear them all clicking. I have fuel pressure. when the cars cold I can set timing but it woulnt go any further then 15 degrees btdc and its suppose to be at 10 as you all know. So I then got adjustable cams gear so I could tryadjusting them to see if that would help if I got timing closer but still nothing. if anything not Its hard to even start. It started fine with the erratic idle with the current setting but now that that gone I have to pump that gas to even get it to start after its warm but again I let off the gas it will die. If I rest my foot on the gas pedal it will not die. I tried degree the cams but im sure it was a failed attempt all though I did my best im sure there still not adjusted great as I couldn't get the dial caliper th set on the valves very well without it being knocked off because theres no room when the camshaft comes around. The intake and exhaust are both advanced a few on the degress marks. Could there be to much overlap or what. Im at a stand still here
Oh I have also checked plug wires and there all within limits. Plugs are gapped correctly. ive put about 110 miles on the engine so far. It drives down the road fine for the most part and only hesitates in upper rpm but I still have yet to get on it heavy cause im still breaking it in. I have 30w non detergent in for the break in period. Also my fuel pump is getting 12v's its a walbro and my fuel filter is brand new. Someone please help im stuck on this. I don't know if its got to deal with my cams and timing or what. I find it weird that I have to give it throttle to get it to start after its warmshould I turn the intake cam in the retard direction or what Tto try and take out some overlap. Someone please help I really want to take the car further then 5 miles as I don't want to drive it a ton and hurt something after all the monet put in. Im sure im forgetting something I tried but if you say it and ive done it ill let you know.
Also forgot to mention I get a code 52 when I start driving. But I don't believe a knock sensor would affect the idle I though those worked above 2000 rpm's But I haven't always had this code. this code came up within the last 20 miles or so.
I rebuilt the entire engine with jp 8:1 pistons, eagle rods all the good stuff. I also have BC stage 2 cams with a stock head and valve train but machine shop looked everything over and it was all good. I removed the charcoal canister and installe all the correct block off plates and did it all properly. I have the breather's on top of the valve covers currently until I come up with another system. I got it all installed got the car to start and ever sense it will not idle when car is warm. At a cold start up the car will idle at 1000rpm's and once it gets warm it tries to stay idleing but will die. So I went through the steps. I check tps sensor and all values are good. There not very adjustable friendly though, they either seem to all be within limits or way off. so then I moved to the afm and that seems to be testing fine also. My next thing was to clean out the IAC valve. I did that and reinstalled it and then again the car was fine a cold start up but once warmed up it then jumped from 1000 to 1600 erratically. I had an extra iac valve and installed that and now it back to the old problem again. I checked for vacuum leaks and have not yet found any at all. I checked around the injectors, around intake mani, all vacuum hoses and nothing. I checked injectors and I can hear them all clicking. I have fuel pressure. when the cars cold I can set timing but it woulnt go any further then 15 degrees btdc and its suppose to be at 10 as you all know. So I then got adjustable cams gear so I could tryadjusting them to see if that would help if I got timing closer but still nothing. if anything not Its hard to even start. It started fine with the erratic idle with the current setting but now that that gone I have to pump that gas to even get it to start after its warm but again I let off the gas it will die. If I rest my foot on the gas pedal it will not die. I tried degree the cams but im sure it was a failed attempt all though I did my best im sure there still not adjusted great as I couldn't get the dial caliper th set on the valves very well without it being knocked off because theres no room when the camshaft comes around. The intake and exhaust are both advanced a few on the degress marks. Could there be to much overlap or what. Im at a stand still here
Oh I have also checked plug wires and there all within limits. Plugs are gapped correctly. ive put about 110 miles on the engine so far. It drives down the road fine for the most part and only hesitates in upper rpm but I still have yet to get on it heavy cause im still breaking it in. I have 30w non detergent in for the break in period. Also my fuel pump is getting 12v's its a walbro and my fuel filter is brand new. Someone please help im stuck on this. I don't know if its got to deal with my cams and timing or what. I find it weird that I have to give it throttle to get it to start after its warmshould I turn the intake cam in the retard direction or what Tto try and take out some overlap. Someone please help I really want to take the car further then 5 miles as I don't want to drive it a ton and hurt something after all the monet put in. Im sure im forgetting something I tried but if you say it and ive done it ill let you know.
Also forgot to mention I get a code 52 when I start driving. But I don't believe a knock sensor would affect the idle I though those worked above 2000 rpm's But I haven't always had this code. this code came up within the last 20 miles or so.
