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Old 10-21-2014, 11:03 AM   #21
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Re: Extreme drop in horsepower

Quote:
Originally Posted by Booyah45828
Seeing how it is an 89, it would be mechanical injection.
I would check that the shutoff lever operates and releases correctly
Seeing you've had trouble with that, that would be my first step.
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Old 10-22-2014, 01:13 PM   #22
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Re: Extreme drop in horsepower

8.3 FE?

WOW I bet you can roast the rear tires
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Old 10-22-2014, 01:59 PM   #23
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Re: Extreme drop in horsepower

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Originally Posted by bansil
8.3 FE?

WOW I bet you can roast the rear tires
or at least you could...

Sorry, bad joke.

I do hope it is something simple (and cheap).
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Old 10-22-2014, 09:06 PM   #24
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Re: Extreme drop in horsepower

Fuel filter.
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Old 10-26-2014, 09:14 PM   #25
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Re: Extreme drop in horsepower

Quote:
Originally Posted by Booyah45828
I would check and make sure the brakes aren't dragging first, because it is extremely simple to do so. Then I would check for any fuel issues.

I wouldn't completely rule out the transmission, but if you dropped it in manual 1st and it still wouldn't accelerate, I doubt the transmission is at fault.

Start with the filters, check the fuel to make sure it hasn't turned bad. Then you start troubleshooting.

Seeing how it is an 89, it would be mechanical injection.
I would check that the shutoff lever operates and releases correctly, then I would check to see lift pump pressure is adaquate.

After that I would check if it has a smoke limiter on the injection pump. What they do is limit rack travel in the pump with a diaphragm until it receives boost pressure from the manifold. If that checks ok then I would check the turbo wastegate that it isn't frozen and works correctly.
Turbo wastegate??? I'll have to Google that one….LOL! Fuel, airflow, and turbo are my three best searches at this time. Thank you so much for the suggestions. It is Great to have future references.
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Old 10-26-2014, 09:18 PM   #26
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Re: Extreme drop in horsepower

Quote:
Originally Posted by opus
Quote:
Originally Posted by Booyah45828
Seeing how it is an 89, it would be mechanical injection.
I would check that the shutoff lever operates and releases correctly
Seeing you've had trouble with that, that would be my first step.
Unfortunately I do not have a fuel pressure gauge on my instrument panel. A friend in Canada encourages me to install one. I appreciate, very much, your continued suggestions. It is all so very helpful as I get to know what I've got on my hands. I am blessed to have such a wonderfully huge and dynamic machine!
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Old 10-26-2014, 09:23 PM   #27
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Re: Extreme drop in horsepower

Quote:
Originally Posted by bansil
8.3 FE?

WOW I bet you can roast the rear tires
What, are you kidding me!?? I can pop a block long wheelie in this beast! Seriously, This monster is a Kunta Kinte…"it want to run!!!!"
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Old 10-26-2014, 09:26 PM   #28
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Re: Extreme drop in horsepower

Quote:
Originally Posted by sdwarf36
Fuel filter.
I checked out your build…GREAT job dude!! I hope it brings you many happy pain free years!
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Old 10-26-2014, 09:40 PM   #29
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Re: Extreme drop in horsepower

OK kids…Here's the rub. Are you ready for this????….My problem is….Squirrel's - Yes, that's right F#@king Squirrel's!!!!!

I noticed some of the pipe insulation had been chewed upon, and thought "who the hell eats that for lunch!???" Then it dawned on me - smart tiny critters who like petroleum covered products to drive away mites and fleas in their nests….Squirrel's. The air intake tube had been chewed open from underneath, and the little bugger had made a nest complete with an Acorn storage bin inside of a good length of the tube.

I had airflow through the small access tunnel until the nest mass shifted, and lodged in the last 90 degree turn to the filter chamber! That is what made the bus just shut down power-wise.

VERY important lesson here…wildlife management in relation to bus ownership must be considered as part of a regular maintenance schedule!!!

Mystery School is back to popping block long wheelies, and at no cost - other than to the Squirrel who lost a winter home !!

Thank to everyone who had suggestions to fix my power loss problem. I appreciate your time and expertise very much!!

All the best…Mark
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Old 10-26-2014, 09:47 PM   #30
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Re: Extreme drop in horsepower

Quote:
Originally Posted by opus
I'd go with a filter for now. Get some Power Service and prime the filter with it then put the as much a bunch in the tank. If you are really thinking algae, you can get Bio-Kleen from Power Service, as well.
Wow!!….The Bio-Kleen really gave the fuel a boost. Thanks for that suggestion. Got my beast a running', now it's time for some cheap sunglasses!!
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