Free: Contests & Raffles.
If there is anywhere that oil and fuel are in the same vicinity, give it a look see.
You didn't just have this thing "tuned" did you?
Quote from: dyhardhuntr on July 19, 2019, 09:29:42 AM If there is anywhere that oil and fuel are in the same vicinity, give it a look see. There were a number a farm tractors where pressurized diesel could enter the crankcase at the injector pump engine connection
not familiar with Sisu, but aren't your injectors outside of the valve cover? So you'd see a leaky injector as it would run down the outside of the block and not make engine oil. I find it very unlikely two injectors would go out at the same time. The p pump uses engine oil to lube the cam and internals of the pump, diesel is probably getting in there. If the pump is on its last leg, that would explain multiple cylinder misfires at low idle speed (lack of fuel pressure) that's a long run to be washing cylinders, best of luck A high pressure fuel gauge on the common rail would help here, also low side fuel pressure.
If that is a common rail fuel system chances are the pump is lubricated with fuel and not oil. Common rail runs at such high psi it doesn’t matter how long your lines are it’s still going to get fuel into the combustion chamber. Washing a cylinder is a byproduct of that. You could have gotten dirty fuel but I would think water got in and not debris unless your pump is failing. I’m curious who the designer is(hopefully not Bosch and it’s similar to the gm fuel system). If you had a cracked injector or a missing tip it could easily cause that amount of fuel. Although if you find a missing tip you will need to check the outlet of the turbo and pull the head anyway.Sent from my iPhone using Tapatalk
Roger, not common rail.Based in part on some great input from knowledgeable folks here, I decided to bite the bullet, take off the pump, and send it down to Seattle for a speedy rebuild. If this pans out, I have a huge thank you to give a certain member here for hooking it up. He shall remain nameless at this point, however, for if I never see my pump again, I'll petition site ownership for his permanent banning
Quote from: Skillet on July 19, 2019, 07:17:00 PMRoger, not common rail.Based in part on some great input from knowledgeable folks here, I decided to bite the bullet, take off the pump, and send it down to Seattle for a speedy rebuild. If this pans out, I have a huge thank you to give a certain member here for hooking it up. He shall remain nameless at this point, however, for if I never see my pump again, I'll petition site ownership for his permanent banning If you sent it to Seattle Injector, you’ll be fine.
This thread has been a cool read, learned a lot about Diesel engines that to be honest are alien to me. Sorry it is at your expense Skillet, but thanks for sharing!
Got a few minutes while waiting for my unload appt, wanted to give a quick update:I took the injection pump off and put it and the original set of injectors on a plane to SeaTac. In the mean time I installed the New set of injectors. The guys at Seattle Injector arranged for a courier to pick it up. They jumped on it and got it turned around in an impressively short time, took it back to the airport for me and put it on the plane to Sitka. Rick reported that it was actually an "A" pump, news to me. He said the pump looked like it had normal wear for a 16k+ hour unit, but the rebuild was going to be warranted at about 20k hours, so I consider this a good investment in early maintenance and piece of mind. He did report, however, that two of my six injectors were stuck open, over fueling cyls #3 and #6. We discussed the possibility of my washing down the cyl walls, and he said tho it would be better if I hadn't run it all that way in that condition, he thought I would be ok. Total bill was a little over $2200. He could have charged double that and I would have happily paid it.. Down time is expensive. I met it at the airport, put a decent paint job on it and had it installed that night. After a phone call the next morning and a bit of fiddling with the governor stop, it was running as good as it ever has. Have put 200 hours on it since and has performed flawlessly.Thanks to all of the Hunt Wa'ers who chimed in on this, the info was great. And a special thanks, maybe a KaBoom even, goes to @Woodchuck for his help, vast knowledge, and connections that helped me get turned around and back on the water as fast as I did.
