Problèmes Injectors replacement
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When I smoke the motor smoke comes out of my Egr and iac 
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Ford F-150 1999 5.4. 4x4 232000 km
Smoke comes from the Egr not gasket issue it's coming from under the top part where vacuum hooks up to also smoke comes from iac looks like it's coming from the little round part on side and also from unit itself.do these parts suck outside air or are they leaking. Also truck has code p0171 lean on bank 1 that I can't figure out. Any help would be appreciated. I also started the truck and tried the o propane gas bottle and carb cleaner and sprayed it around both WITH no change in motor running. Not sure what to do next except change plugs injectors and coil packs and see if that will solve my p0171 code.
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Meilleure réponse (selon Joey)
WO
I just had this problem as well. I took truck into garage and had intake gaskets replace new hoses and new intake. This cured my issue. Certainly something you may want to have looked into. Job was a little expensive but it was well worth it and I got a great deal on it. They found my intake was cracked, the tube behind intake had somehow broke and was leaking coolant, My truck shook at idle and take up with little power. This job can cost at much as $2000 but it was 1/2 cost at my local garage. I just got truck back and Its like its brand new. Good luck
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JO
Thank you I smoked the motor again and now have no visible leaks anywhere and we smoked it good so now I'm thinking I've got bad sensors.
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CommenterNo start no power to coil or fuel shutoff switch or Ignition module
Ford F-150 1992 4.9 manual 135000 km
The truck will crank but has no power to coil ignition module or fuel shutoff switch (inertial) we hav jumped between 2 and 6 in the eec connector and still no power to switch checked main ignition switch and all wires have power in the run position found a bad wire to main fuse panel under hood to the # 22 fuse repaired and restored power. Had ignition mod. Tested used noid light on injectors verified spark replaced all 6 injectors verified base timing and plug wire location HAVE Questions about noid light test seems the light is blinking way to fast when cranking like its seeing every cylinder pulse signal not just the one I am connected to ???
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