05VHO Posted June 1, 2007 Report Share Posted June 1, 2007 What are the symptoms of a bad injector? Truck is running really bad, won't idle and feels like it's down a cylinder. Changed plugs and no change. All connectors look to be plugged in and it's not throwing any codes. Any help would be appreciated. thanks beau Quote Link to comment Share on other sites More sharing options...
FireRescueSS Posted June 1, 2007 Report Share Posted June 1, 2007 Why must you ask? You're mean. Anyway, the check engine light will be on steady, then flash when it's under a load. Flashing check engine light means NO DRIVING, can cause serious damage to the engine. Your typical symthoms, rough idle, hesitation, total loss of power, and lots of vibration. If your plugs and wires are fine, it can only be the coil or the injector. Quote Link to comment Share on other sites More sharing options...
Justin Lamanna Posted June 1, 2007 Report Share Posted June 1, 2007 you can check your fuel pressure too Quote Link to comment Share on other sites More sharing options...
Fireman31 Posted June 2, 2007 Report Share Posted June 2, 2007 Why must you ask? You're mean. Anyway, the check engine light will be on steady, then flash when it's under a load. Flashing check engine light means NO DRIVING, can cause serious damage to the engine. Your typical symthoms, rough idle, hesitation, total loss of power, and lots of vibration. If your plugs and wires are fine, it can only be the coil or the injector. It might also throw a random misfire code too....... Quote Link to comment Share on other sites More sharing options...
brobradh77 Posted June 2, 2007 Report Share Posted June 2, 2007 It might also throw a random misfire code too....... Thats what I would think woould happen if you had a bad injector. Quote Link to comment Share on other sites More sharing options...
05VHO Posted June 2, 2007 Author Report Share Posted June 2, 2007 No ses codes, fuel pressure is good. Not really sure where to look now. Changed plugs and no change. Can't figure it out. Quote Link to comment Share on other sites More sharing options...
05VHO Posted June 2, 2007 Author Report Share Posted June 2, 2007 well looks like I have a weak injector. I just finished a cylinder balance test with hp tuners and this is what I ended up with. Inj 1: 98% Inj 2: 99% inj 3: 103% inj 4: 103% inj 5: 101% inj 6: 102% inj 7: 107% inj 8: 76% Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.