17rd will only run flat out

citsncycles · Post by **citsncycles** » Thu Jan 30, 2014 3:24 pm

I managed to get Fred started today, old fuel and all, but he will only run full throttle, even with the sop screw wound all the way out. I don't think he's running away with his own oil as he shuts down as soon as I turn the ignition off, but I'm now at a loss as to what to try next. Any ideas?

Post by **Tim Leech** » Thu Jan 30, 2014 4:44 pm

Hmm pump timng possibly Mike as per FB?

citsncycles · Post by **citsncycles** » Thu Jan 30, 2014 4:53 pm

I've verified that the belt timing is ok, but it has also bveen suggested on FB that I need to take the top of the pump off to check that the arm on top of the pump is doing its thing.

Kitch · Post by **Kitch** » Fri Jan 31, 2014 12:17 am

17RD does nothing unless flat out shocker

Thread Bear · Post by **Thread Bear** » Fri Jan 31, 2014 9:16 am

Does sound like a physical prob like something stuck open. Only time I had this was a miss assembled set of levers on the pump meaning it could not shut off. One part was on back to front but I forget which. Pug, but same bits. No idea how it had been driven. Slipping the clutch I suppose.

Post by **Defender110** » Fri Jan 31, 2014 1:59 pm

Yes just sounds like the fuel rack is stuck open, which pump is it?

citsncycles · Post by **citsncycles** » Sat Feb 01, 2014 5:23 pm

It's an early Bosch pump, same as Timex. I've bought a seal kit which arrived in the post today, so I'll be pulling it to bits tomorrow. With all the bits and pieces I'm finding seized up I'm expecting to find more stuff that's stuck. 14 years stuck in a field will do that I suppose.

Thread Bear · Post by **Thread Bear** » Sat Feb 01, 2014 6:13 pm

citsncycles wrote: With all the bits and pieces I'm finding seized up I'm expecting to find more stuff that's stuck. 14 years stuck in a field will do that I suppose.

It didn't do me any good either, and the birds kept away the whole time. Bummer

.

Post by **Tim Leech** » Mon Feb 10, 2014 1:41 pm

Any further forward on this Mike?

citsncycles · Post by **citsncycles** » Tue Feb 11, 2014 12:50 pm

Not yet - the only dry day I've had off work since then I had to service both Timex and the Vara, then guess what - it started raining!

I'm on lates this week, but may get a chance to look at it over the weekend after my shift finishes.

Post by **Tim Leech** » Sat Feb 15, 2014 8:27 pm

Know what you mean Mike, fed up with this rain , the link road from our new estate to the A444 is under. 2 foot of water which means an extra 5 mins reroute.

citsncycles · Post by **citsncycles** » Sun Feb 16, 2014 12:24 pm

After work yesterday I actually had some daylight and dry weather, so took the top off the pump:

Not much wiser as a result though! I assume the gear is driven off a shaft driven by the cambelt. The levers at the other end move, but I don't know if they move enough! They seem to press against the shaft that the gear runs on - is that supposed to slide or something? Thefact some of it seems to have a light coating of rust doesn't exactly fill me with confidence either!

sdelasal · Post by **sdelasal** » Sun Feb 16, 2014 4:00 pm

I'd say the colour of those internals does not look good. Looks like rust has got a grip! It's all supposed to be spotless and clean inside there. I'd suggest look for a good used pump and swop it over. It can be done by leaving the belt wheel clamped in place to the engine - that way cam belt is not disturbed. Steve

citsncycles · Post by **citsncycles** » Mon Feb 17, 2014 12:58 pm

I must admit I did wonder about that. Does anyone know how common Bosch pumps were on the XUD engined C15's, or if there would be problems fitting a Bosch pump from a 19d? I'm only asking about Bosch as that would avoid changing the pipes and injectors.

Hmmm - also wondering what the cost may be - might be more cost effective to drop a complete engine with a pump fited if I can find one - 19td Mk1 anyone???

sdelasal · Post by **sdelasal** » Mon Feb 17, 2014 6:24 pm

Mike - The difference between the xud7 & xud9 is 1770 vs 1900cc. So the 1.9D pump will tend to put in too much fuel at a given RPM. However, I believe they are to some extent self compensating - so for example, at idle the pump will adjust fueling to get the RPM correct - so if you fit a 1.9 pump , it'll back off the fuel as much as it can to control RPM. Then when you go on the pedal, fueling will be relative to that idle adjusted position. There will be limits to how much it can back off. However, there is also a fueling adjustment screw that you can adjust to take out some of the excess fuel capability. So given there is only a 130cc difference in engine capacity, I think you'd get away with a 1.9D pump and backing off the fueling screw. ebay item 281264629052 might do the trick. If its from a turbo engine though that adds another layer of maybe! Steve

BX Club Forum

17rd will only run flat out

17rd will only run flat out

Re: 17rd will only run flat out

Re: 17rd will only run flat out

Re: 17rd will only run flat out

Re: 17rd will only run flat out

Re: 17rd will only run flat out

Re: 17rd will only run flat out

Re: 17rd will only run flat out

Re: 17rd will only run flat out

Re: 17rd will only run flat out

Re: 17rd will only run flat out

Re: 17rd will only run flat out

Re: 17rd will only run flat out

Re: 17rd will only run flat out

Re: 17rd will only run flat out