I have a 1990 3.1L with 150,000 miles that runs rich. I have replaced all the vacuum hoses and checked the fuel pressure regulator, maf sensor etc. and relaced the O2 sensor. A code 45 (O2 rich) comes up on my tester some times and the sensor gets stuck between 700 and 990mV. I wonder if my injectors are leaking. All six injectors are ticking normally. Any sugestions will be appreciated.

 

I dont know how many times people post ads like this..almost on a daily basis.Do a search on the thread.."ditch your stock injectors".You covered the fuel system pretty good..you could remove the injector rail and turn the key on and see if any leak or ohm them.Most people dont realize that those two fuel lines on the drivers side(return and supply) are made of rubber and theres a reason for that.You can test your pump/injectors/and reg. by crimping those lines while watching your pressure gauge.I think your injectors are done..

 

thanks a million for the tip, I will give it a try today and post my results. I'll even try to take some pics of what I have done for anyone else who has this same problems.

 

I posted one like this and it dead ended. I guess people didn't think I used the search button well enough. Here's what I was told. The pingel injectors are crap (stock). People say the accel ones leak out of the box. People say the the venom ones leak out of the box sometimes, but they have good customer service and will send you new ones until you have a set that won't leak. The general consensus is that the ford injectors are the best. They are the one's from a ford ranger. What year? What motor? That's what no one knew. No one has a link or part number or anything. I think there's a model number I found on one thread. It didn't help me find the injectors though.

 

What're you talking about? There's lots of info in this thread which was mentioned earlier...

https://www.thirdgen.org/forums/v6/4...injectors.html

If you read through all of the posts, you'll find out years and everything.

 

Thanks for the useful info I will search and find these ford injectors. When I install these injectors, I'll post the end results and take some pics.