Why does my engine run rich?

Sorry, the posting showed up on my end without your last post. If you are getting that much fuel into the cylinders, they have to be leaking. My loss is why the pressure increases when you disconnect the injectors. Has anyone done any rewiring?

I am sorry, but I am getting postings showing up that have been confusing me. There have been a few problems with the web page. I have been getting postings that have no reply from the people I am communicating with (which I think is what happened with yours). As a result, I have posted back, let me know what you find. Then I have not been receiving replies from people who have sent me replies. I was told that everything has been taken care of, so I hope you receive this and understand.

I reread everything we discussed since day one. Here is what I have come up with. First, understand that fuel pressure (35 PSI) with the key in the run position is alread high. According to Mitchel online, the fuel pressure should be between 9 and 13 PSI. When you disconnect the injectors, that should not change. What happens is the pressure is increased when in the start position. Since the regulator is vacuum operated and there is no vacuum because the engine does not start, it allows the pressure to increase.

My concern is this, like I mentioned, according to Mitchele online, the pressure should be much lower, 9 to 13 PSI. I know you checked the regulator. I really believe you have a bad fuel pressure regulator or the wrong fuel pump. Try pulling the fuse for the fuel pump to see if it will run for a short period of time. Also, I have contacted one of my friends on this issue who is a great mechanic. We discussed your problem and he agreed with me with my diagnosis. He plans to read the post and offer his advice to you too. Let me know what happens when you remove the fuel pump fuse.

Again, I am sorry about the confusion. I believe everything is fixed so it should not happen again. I want this thing running too. I do not like getting beaten by any automotive problem.

Joe

I will check to see if I can find anything different with the pump. It may lead me down the same road as you, but I will check. Wow, I cannot believe that went to 60 psi then dropped to 40. I wish I could copy and paste the information I got from Mitchelle online, but it will not let me.

Again, expect some input from another tech. His name is Dwayne. He plans to post tonight after work. Today, being Monday, I know he works until 8:00. I will check on that part number to see if there is anything I can find that is different.

I will talk with you later,

Joe

Wow, it sounds like you have the same luck as I do. Regardless, I am glad it is fixed. Is it not amazing that this type of thing happens. Think about it. From the time the pump was installed, there had to be a problem.

Thanks for using 2CarPros. Com and take care.

Joe

How could it have run?

Great addition to this thread! Please feel free to help out whenever you are on the site. :)

Cheers, Ken