Thanks for sharing your story. I can imagine how limited access and support for this sled could be a real problem. The first year Summits were having some odd problems with the LP pump under the engine, and some sleds had tough to diagnose eRAVE issues that I suspect were caused by a pinched signal wire in the harness.My take on a 2005 Mach Z 1000 is -
It was troublesome to the owner here in Rankin Inlet, with very limited access to any shops, minimal dealership assistance the owner managed to get roughly 45,000 (+/-) km on it. It was a heavily abused sled as we don't have groomed trails up here, heavily neglected sled due to the fact of our isolated location.
One summer I went over to our local dump to find usable parts for a project I had going...I was surprised to see majority of the chassis along with the motor in it. (Might have seized?) But any usable part was taken out for a newer sled the owner had gotten.
It was one of those "oh nooooo" moments seeing it at the dump. I thought about taking it home for a project but I just couldn't fathom what I would go through knowing what the previous owner went through with it.
I will have to do a "dump tour" for our fellow DooTalk members one day.
It's insane what is brought up that could be fixed with a bit of time and patience.
The number of cases that I found even locally just blew my mind. Before I joined this forum I had no understanding of this engine. The only thing that I knew back then was the ongoing debate that I was hearing locally of the REV chassis that many still believed was more appropriate for ditch banging and questionable for trails. It didn't take long to figure out this was a bunch of crock much like when the ABS first came out in cars and many were claiming it wasn't all that good, and the fiction lasted well over a decade. In 2003-2004 when the REV chassis first came out, ABS was still an option for most cars. It took a 6-8K package to get it. The same happened with the seat belts with the locals were telling me that going through the windshield had saved their lives.
To this day the amount of BS is shocking with no end in sight. That's why it is increasingly important to take a close look at each failure. I try to do by best, but there is no way in heck anyone can do this on their own. Note that I wrote failure without mentioning the 995. The E-TEC has the same issues and battling the same problems, but it holds the advantage of having a better perception. Some things with the E-TEC are obviously better such as the more advanced anti-knock strategy, it has only one fuel pump, the injectors are less prone to fuel issues, and it consumes more oil. Ok, but the 995 SDI with the Sea map runs richer in gas, the injectors are easy to clean, high turnover gas holds a lower risk of debris and water, and the oil consumption is easy to adjust. The Summit RT may have had a disadvantage with having the leaner Mid or High maps.
I would love to speak to someone from BRP who was involved in the roll-out of the Summit RT in 2005 so that I could ask some real questions. My suspicions are only as good as what I can prove. I first ran the Mid map in 2019 on RX7MachZ' Mach Z. The plugs were off-white which was lean, but still ok. I have run a Mach Z at the beginning of the season that showed plugs white as a ghost because none of the injectors were cleaned which takes maybe 30 min to do at home. What worried most about the Mid map was the a/f in the midrange, but I have yet to really look into it. Unfortunately we had it on the sled that had no Wideband.
My Renegade currently has the Mid map that I flashed myself last spring in 2021. I want to see what the Summits had to deal with running near sea level. I think the typical low elevation out West is somewhere around 1000-1500 feet. I am at 200 feet, so I hope that any problem will be exacerbated for my elevation, but not necessarily. I did find a problem running the Sea map at around -20C (-4F) and 2200 feet. While riding towards lower elevation of ~800 feet, at some point the engine behavior changed like a switch. We had two RTs and both changed within a few minutes. Back then I didn't have my Wideband and never bothered to look into it further. There are so many things to check that is endless.
You absolutely should take a dump run! Parts will eventually become scarce.
Did you mean 4,500 km?