Two different units but there is an odd link. Back in May, I received an email about a fuel injection pump issue & it turned out to be as a result of a post I made in 2017 about a BX2200. The guy who emailed me was the B7800 owner. To say I was surprised is an understatement & all of a sudden I had to go searching for information in my own files & I found what I was looking for, fortunately, & I sent it on to the guy. I didn't post all I had here because it was too much. Some things you have to do privately. What did I send, apart from detailed photos of an injection pump disassembled & itemised components, parts manual drawings & more? I offered advice from the mid fuel line lift pump to solenoid, how to test them & the pump itself down to components. The bottom dollar line was a new injection pump for £1,000 or more or could I help? He didn't bench test the solenoid but bought a new one. This is where, for all the advice I gave & all the time & effort I invested, in trying to help, was a waste of time. Why, because although I'd detailed everything from fuel tank to injectors...I missed the basic of basic things...& I'm a tech savvy guy...almost. Somehow, between us + his 14 year old grandson, during new solenoid testing his grandson asked about the fuse. We already knew the solenoid wasn't supposed to be working but this whole event turned out to be the fuse to the fuel cut off solenoid. That's how easy it is to miss the simple & get things really complicated. If there is a moral to this tale...start with the basics of both mechanical & electrical, if electrics are involved, & think what they are or can be before you make a mountain out of a mole hill.
Fuel injection pump query re: BX2200 & B7800
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North Idaho Wolfman
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Rules of troubleshooting:
1. Check the simplest possible cause first: it's cheap, fast and usually the problem.
2. What did you do just before the problem occurred? Again, often the cause...
1. Check the simplest possible cause first: it's cheap, fast and usually the problem.
2. What did you do just before the problem occurred? Again, often the cause...
Yes, absolutely! But occasionally, fuses just... fail. No real reason.
That happened more often with the old glass fuses. Modern plastic ones are built on machines that have better quality control, but still, it does happen now and then.
I'd look at a bad solenoid first, but never assume!