Deereman76
Veteran Member
My Car has been acting up for quite some time, misfiring, occasional engine stalling, and QA codes maybe once per week. I was dreading the cost of a new Injector Pump.
Last wednesday it dies 5 times on my way to work. Mostly between shifts. Cycle the key, and it would fire right up. QA code every time it dies.
I decided it was undriveable, and time to do something. I figure I have nothing to lose by cleaning the QA, worse case I buy a new IP. The other option is to buy a new IP straightaway.
I Pulled the QA off the Engine, disassembled it down to empty case with the shaft still in it, Cleaned it up nice, put it back together. Car now runs like a top. Much Better throttle response. Overall power is about the same, but the misfireing is gone.
Some General Thoughts/Observations on the process:
1. It was Dirty in there. I expected fairly clean, with a bit of surface dirt. there were large quantitys of crud. I went through almost a box of Qtips. Between the Electromagnet and shaft there was about 1/10 of an inch of hard Crud that I had to scrape aggresively with a screwdriver to remove. There was quite a bit of what looks like Filter Media, perhaps someone neglected the filter in this pumps life??
2. this job has two distinct components. Mechanical, & Soldering. the Mechanical part of taking it apart is no more difficult than say, rebuilding a Briggs & Stratton Carb. The Soldering, was outside my Comfort zone, so I had a Friend do that part.
3. Adjusting this thing after getting it back on the car was tricky. There are 2 adjustments I had to make, to get it to run correctly. 1 was what we refer to as the Hammer mod. The other is getting the Register between the QA shaft and the sensor on top correct. Of course, they both affect each other.
I have several Pictures I took along the way, for purposes of putting it back together. I May Post a couple, along with a couple gotcha points that I Found, that may help others who want to try it.
For now I am excited to have my car running well again!
Last wednesday it dies 5 times on my way to work. Mostly between shifts. Cycle the key, and it would fire right up. QA code every time it dies.
I decided it was undriveable, and time to do something. I figure I have nothing to lose by cleaning the QA, worse case I buy a new IP. The other option is to buy a new IP straightaway.
I Pulled the QA off the Engine, disassembled it down to empty case with the shaft still in it, Cleaned it up nice, put it back together. Car now runs like a top. Much Better throttle response. Overall power is about the same, but the misfireing is gone.
Some General Thoughts/Observations on the process:
1. It was Dirty in there. I expected fairly clean, with a bit of surface dirt. there were large quantitys of crud. I went through almost a box of Qtips. Between the Electromagnet and shaft there was about 1/10 of an inch of hard Crud that I had to scrape aggresively with a screwdriver to remove. There was quite a bit of what looks like Filter Media, perhaps someone neglected the filter in this pumps life??
2. this job has two distinct components. Mechanical, & Soldering. the Mechanical part of taking it apart is no more difficult than say, rebuilding a Briggs & Stratton Carb. The Soldering, was outside my Comfort zone, so I had a Friend do that part.
3. Adjusting this thing after getting it back on the car was tricky. There are 2 adjustments I had to make, to get it to run correctly. 1 was what we refer to as the Hammer mod. The other is getting the Register between the QA shaft and the sensor on top correct. Of course, they both affect each other.
I have several Pictures I took along the way, for purposes of putting it back together. I May Post a couple, along with a couple gotcha points that I Found, that may help others who want to try it.
For now I am excited to have my car running well again!
