first question in the forum - Snowmobile Forum: Your #1 Snowmobile Forum

gman82001 · 07-12-2006, 11:24 PM

i just bought a 97 ski doo summit 670 its my first sled i dont know much about it was hoping you guys could give me some info good or bad so i know what i got myself into

tryed to start was pushing fuel out of the side of the motor replaced upper gasket

when i pulled the motor apart the lower motor was full of fuel ordered new fuel pump figured it was just going past pump through vacuum hose
anything else i should look for so i dont kill myself this weekend trying to start it

**smallengineguy** · 07-13-2006, 03:39 AM

First, welcome. If the motor is full of fuel, there are 2 possibilities. First, the one you said. Second the carb inlet needles aren't sealing correctly, letting fuel by and filling the engine up. Remove and clean the carbs, and replace both inlet needles/seats. That should do it.

TIC · 07-13-2006, 11:51 AM

Hi gman; I'm new here as well, just bought a 98' formula 3 ski-doo and an MXZ-550f.. Fortunately mine don't seem to have any fuel related problems (except for me spilling gas on the seat).. I feel like a kid waiting for Christmas now.. No snow for months and two sleds in the workshop = torture

IndianRvrShiver · 07-13-2006, 12:18 PM

Welcome to SF.com!!
Listen to SEG....he's our resident wrench guru!!

gman82001 · 07-13-2006, 04:03 PM

thanks for the info the carbs were the first thing i did do when i got it figured they probably needed cleaned anyway didnt replace needles though wil try them next
any info on that particular sled hopefully good or possible quirks with that model or engine would help alot like i said totally new to sleds dont reallyknow what i got

**smallengineguy** · 07-13-2006, 09:39 PM

The 670 is a bulletproof motor. Very dependable. You should have very good luck with that sled.

gman82001 · 07-13-2006, 11:12 PM

good i was worried it was a shotty sled or poor motor but for 400 bucks and only 1100 miles probably shouldnt complain too much

as for being excited TIC got my sled and my elk tag the same week the only thing better is that i could afford gas for both adventures

IcePrincess · 07-16-2006, 07:58 AM

Gman, where are you from...and what State did you get your elk tag? My husband and I are both avid hunters and can't wait to take a trip out West to hunt Elk...registration/lottery/app's from State to State out there are a nightmare to sift through...I was just curious where you got yours...

http://cabotskylighters.com

skidoo kid 102 · 07-16-2006, 01:00 PM

i have a 97 mxz 670 and had almolst had the same problem minus buying new fuel pumps etc...Is the sled backfiring when you try to start it. I had to replace the solenoid inside the starter that keeps the pistons firing at the correct time.when i tried to start it. it would kinda backfire and yank the pull cord back and yank your arm out of its socket as well. the solenoid is inside the starter cover? hope this helps!

**smallengineguy** · 07-16-2006, 01:12 PM

I think you mean stator.

gman82001 · 07-17-2006, 07:09 PM

well first i live in cheyenne wyo but was raised in rock springs on the other side of the state so we still go over there to hunt dont know the country to well over here

Ihave another question got my fuel pump today dont think it is the one i need quite a bit smaller than the stock one i ordered a mikuni df52136
but it is way smaller im wondering do i need the big df62702 for this motor
or do i have to order the 90$ one from my (pos) skidoo dealer

gman82001 · 07-17-2006, 07:23 PM

im not sure if it back fires or not havent even got that far yet keeps dumping too much fuel to even fire once

i forgot to ask where you guys order from ive gon through jrgraham only because a guy at work told me about it like i said my dealer AINT VERY HELPFUL if it doesnt say harley they dont care

i need to find all the technical info like how many liters an hr for my pump and things like tha i asked about a manual they said 100$ the cant even get an owners manual please help!!!!!!!!!!!!!

**smallengineguy** · 07-17-2006, 07:58 PM

eBay, eBay, eBay!!!! They have ALL that stuff!

IcePrincess · 07-18-2006, 09:01 PM

I agree with Smallengineguy you can get manuals, good quality after market parts, and even schematics on Ebay.... there is a lot of crap on there too so read the descriptions well and ask questions before bidding! Also, if you don't find what you are looking for, Ebay can provide a number of good leads to people who either sell what your looking for or know where to get it! Good luck!

http://www.cabotskylighters.com

gman82001 · 07-18-2006, 11:19 PM

thanks for the info called around and found a skidoo dealer in laramie way better than the one here got the right pump coming will letyou know how she runs this weeken (fingers crossed)

SnowRida · 07-19-2006, 04:36 AM

Good luck and post some pics!

letitsnow · 07-19-2006, 12:06 PM

i would have rebuilt the pump you have, its about 20$ and 5 bolts, very easy.
you only have one pump? i have 2 on my 583.

gman82001 · 07-19-2006, 09:25 PM

only 1 pump with 2 outlets i had planned to rebuild once i saw how simple it looked couldnt find the kit dont know too many good parts places or sites i still want to rebuild it as a spare though

**RJ Gleason** · 07-20-2006, 05:19 PM

There is a sticky in the maintanance section that has parts suppliers listings.

gman82001 · 07-23-2006, 12:21 AM

BRAAAAAAAAAAAAAAAAAAAAAPPPPPPPPPPPPPP IT RUNS THANKS FOR THE HELP EVERYONE! it did flood after about 20 seconds gonna reclean the needle valves if that doesnt get it order some new ones sure was cool to get it going though