'97 Mach 1 699 Triple Problems! - Snowmobile World : Your #1 Snowmobile Forum

rumpeltiltskin · 01-26-2007, 08:45 AM

1997 Mach 1
I bought it used last winter and didn't drive it much. This year it ran great for about 700 miles i would guess(speedo don't work) Blew up a belt and took out the crank seal. I removed crank seal and found the two crank bearings were also bad. Removed engine and replaced the two bearings and seal. Now the engine is back in. I ran it for about 20-30 seconds at a time about 5 times. Now it won't start at all. WHY WHY WHY!!!!! Could it have anything to do with running it without the exhaust on?? It has good spark and I cleaned the carbs. HELP!!!! On a different note I also have problems blowing belts every 200-300 miles. I ride on basically flat ground and try not to "hot rod" it too much. Any help would be greatly appreciated!!

vernmeehle · 01-26-2007, 08:52 AM

From reading previous posts from different people in hear, i have a feeling that you are going to need to do a compression check on each cylinder to make sure you didnt blow your rings out when you were running the engine with no back pressure from the exhaust being off. As far as blowing belts you will need to check the alignment of the clutches.

hooligan1 · 01-26-2007, 01:56 PM

For sure do a commpresssion test and if you are blowing belts that fast you are almost certain to have a clutch problem. If you can check the alignment yourself but I beleive you need a clutch alignment tool.

rumpeltiltskin · 01-28-2007, 05:39 PM

Quote:

For sure do a commpresssion test and if you are blowing belts that fast you are almost certain to have a clutch problem. If you can check the alignment yourself but I beleive you need a clutch alignment tool.[/b]

I will do the compression test. I just held my thumb over the spark plug hole and had someone pull the rope and they feel good but I know I need to put a gauge on it. About the belt problem... The clutch was rebuilt at the beginning of the season by Felker, who is supposedly "the best ski doo guy around", He said the alignment is good it is just a design problem with that particular year. I personally haven't seen any example of him being as spectacular as everybody says, but that is my personal opinion. I cut holes in the belt gaurd and took out the fin things in the hood openings, maybe that will help it run cooler. But first it needs to #$%^#$ RUN!!! I will get back to you all on the results of the compression test.

rumpeltiltskin · 01-30-2007, 08:09 AM

Well now I have a list of new problems. The clutch side cylinder is over fueling horribly. You take the plugs out, pull the rope, and it looks like old faithful shooting gas out. The exhaust is back on. BUT, now I have a bigger problem. I thought it was a carb problem, so I cleaned them all again, checked float level, checked the needle and seat, and synchronized them perfectly. I pulled the rope and once again gas rocketed out of the plug hole and something must have sparked or something because everything was on fire!!!!! By the time I found a fire extiguisher and put it out it melted fuel lines and probably wires too.
I am pissed off to the point where maybe I should have let the mother ####er burn to the ground. I am tired of even looking at this thing. If anybody is interested in buying a non running, dirty (fire extinguisher dust), half burned, 1997 mach 1, you will get one hell of a deal on this one.

ballsout1 · 01-30-2007, 06:11 PM

dude, thats so funny. stuff like that used to happen to me all the time. you might not appreciate it now but trust the ballsout 1 ...you will laugh about it soon. the problem was almost certainly in the needle and seat and or float even though you checked em. good luck gettin er back together.

oldyeller · 01-30-2007, 10:40 PM

Yup ballsout it right it was probably a stuck or worn out needle and seat that was causing the flooding in the one cylinder..Also check your choke cables.My brother had all kinds of problems with his 97 FIII 600 even the dealers couldn't figure it out and it turned out that the choke cable was messed up causing flooding in one cylinder.....Also starting a cold two stroke and only running it for 20 seconds is asking for plug fouling problems..Especially 5 times!....Your clutch must be misaligned or you are running poor quality or incorrect belts..No way they should be blowing that fast...Replace the burnt lines and wires and I'm sure we can help you get the beast sorted out.

jawz · 02-05-2007, 04:42 AM

Reading this made my day, I've been in your shoes and trust me at the time it sucked. Some say down the road you'll laugh about it but I try to forget about those days. Clean everything up, put new fuel lines on it and start back into it. You'll get it running great and never look back.

rumpeltiltskin · 02-15-2007, 07:50 PM

Quote:

Reading this made my day, I've been in your shoes and trust me at the time it sucked. Some say down the road you'll laugh about it but I try to forget about those days. Clean everything up, put new fuel lines on it and start back into it. You'll get it running great and never look back.[/b]

Well, I have got the new fuel and oil lines put on. I have spark. The clutch side cylinder (I call it #1) is firing but not the other two. I think #3 cylider fired a couple times, maybe. It started for a very short while, maybe 8 or 10 seconds, at about 100 rpm. The spark plug on #1 looked about right, not too wet and not too dry. Plugs 2 and 3 were dry. I have been into these carbs about a half a dozen times and everything looks good. All the jets and holes everywhere are all clean and clear, the needle&seats all open and close how they should, floats are not stuck and they all move freely. Somebody tell me what the F is going on. I am running out of snow around here and I know if I don't get it running within about a week, it will NEVER run again. Somebody HELP!!!!!!!!!!!!

oldyeller · 02-15-2007, 07:55 PM

Did you check those choke cables?..It's possible that only one choke is actually working out of the three and thats why the other two cylinders won't fire up...