Spring under injection pump - 2009 RTV 1100 runaway diesel (continuing from 5/12/23 post)

todd-wv

New member
Our 2009 RTV1100 CW9 Worksite Model 2009 - 2011 has less than 600 hours on it. This winter it sat for 4 months, ran good for 30 minutes in May, then wouldn't even sputter. Per my 5/11/23 post, here is what I've tried, plus the last step:

- Replaced fuel filter - no start. Filled tank with filtered fuel - no start.
- Loosened injector pipes to bleed (but at that time I didn't realize there is a manual lift pump primer lever) - no start
- began removing the injector pump for visual inspection but gave up and reattached it - no start
- checked voltage on both lines to fuel stop solenoid. Were good.
- replaced solenoid with Amazon chinese piece a' junk. - primed a bunch of times, started and the diesel ran away, would stop only by cutting off all fuel supply.
- found that the above had fried itself, so replaced the old solenoid, re-checked all fuel hoses - started without priming, but the diesel ran away again. The old solenoid survived.

So, getting back to the earlier post, aurthuritis, you mentioned a spring that might have come loose under the injection pump. Is it inside the case or outside? That seems to be my last resort before paying some big bucks to fix this thing. I might have knocked it loose when I started removing the pump.

If anyone knows where I can find the shop manual it would be appreciated. Someone had the 900 and a later model 1100 elsewhere in the Forum, but I would like to be sure about what I am looking for and find one for the RTV1100 CW9 Worksite Model 2009 - 2011.
 
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Here's a final update on the final solution to the runaway diesel problem. Our teenage son looked at the solenoid and with his superior eyesight noticed a gap at the connection between the fuel shut-off solenoid and the injector pump. After it was re-inserted correctly and eliminating the air gap, the engine starts and runs perfectly.

Couple of pointers:

1. the solenoids have a ridge with an undulating surface that has to be at a near-perfect 90 degree angle to the fuel pump to seat correctly.
2. we had to drive the bolts with a flathead screwdriver in a 10mm socket because there is very little room to work.
 
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