What can bad injectors do? [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

: What can bad injectors do?


sikk50
02-10-2010, 01:53 AM
Heres the deal. I've been saving for a trans, 4k and I had planned on doing when I went home for sprin break in a few weeks, but my truc has been smoking at idle for a few weeks and now I'm wondering if I'd be better off spending my money on the injectors now and just continue babying my trans till June when I'm on brea from school and back to my summer job.

So in a nut shell, with the several thousand miles I will put on my truck between now and summer, can I do engine damage or just continue to smoke and kill my gas milage? What should I do?

jtaylor11
02-10-2010, 02:09 AM
Have you checked your balance rates? I wouldn't jump to conculsons yet. But my 03 injectors were going out and I put 7-8k before I traded it in. They was throw codes, getting really hard to crank and blowing white smoke after long idles.

sikk50
02-10-2010, 03:17 AM
Just with the my ATS programmer. I've got a couple that are showing around 3-2 and my #1 goes from 1.5-0 at idle. I've been dosing it heavily with Kleen, and its helped a little. Just changed my oil yesterday, no diesel in the oil. I'm pretty sure its the injectors, but either way I'm gunna have the dealer run a diagnostic on it first (I'm not showing any codes on my programmer). Depending on how many are bad I may just get some +50hp injectors. But like I said I'd preffer to do my tranny first.

ski
02-10-2010, 12:15 PM
My truck started smoking at about 178,000 miles. Had the rates checked 2 times and all were in spec. I have 193,500 on the truck now and the truck really smokes at idle.
I have the injectors just dont have time to get the truck to the mechanic with all the snow we have been having the last 5 days. This will be the trucks first set of injectors and hopefully last.
My truck has no codes other than turbo over boost code b/c of the Hypertech program (so I'm told), no fuel in oil, no hard starts.
Only real thing beside the smoke at idle is acceleration sucks and fuel mileage around town is bad but once the truck gets moving on the highway it's like there is no problem at all.
I did tune my truck back to stock and it cut down on the idle smoke a tiny bit.

Seann
02-10-2010, 01:06 PM
Mine has started to smoke too... at my next oil change I will (as always) send my oil in for an analysis and if too much fuel in the oil then see GM

sikk50
02-10-2010, 05:57 PM
But do I need to worry about damage?

ski
02-10-2010, 08:14 PM
But do I need to worry about damage?

I dont really know but after doing some reading on different threads I think if an injector is stuck open it could do damage to a cylinder head.
Hopefully someone with more knowledge could give us a better answer.

S Phinney
02-10-2010, 10:16 PM
As far as damage it would be unlikely in the short term but on the other hand it really isn't good for the longevity of the motor. I would do the injectors then tranny later. You could purchase Bosch remans for less than 2k and install them if you have the skills.