mattysmith440
New member
So. I bought a SRX 700 from a different province a few weeks ago. My father was on vacation and he went and picked it up for me, it ran fine, sounded great, and is in near MINT condition. anyways thats besides the point.
When i start it, it wont run the #1 cylinder. take the plug out, and soaked. Once it gets past 4000 rpm, number 1 works perfect. Tried a new coil, nothing. Put on a brand new stator and flywheel, still the same. switched out the number 1 and 2 coils to confirm i didnt have another dead coil. The problem stayed in the number 1. When left outside in the cold, when i start it up, it will run on all 3 perfect, until it warms up, then drops #1!
I hauled the carbs apart, everything is clean and stock besides the 45 pilot jets, which are supposed to be 40's. Could this cause my # 1 to not burn when at idle??
Some help would be greatly appreciated guy, as i Just put 8 tooth drivers, 1.75 back country track, re done both clutches, put a mbrp race can, etc.
When i start it, it wont run the #1 cylinder. take the plug out, and soaked. Once it gets past 4000 rpm, number 1 works perfect. Tried a new coil, nothing. Put on a brand new stator and flywheel, still the same. switched out the number 1 and 2 coils to confirm i didnt have another dead coil. The problem stayed in the number 1. When left outside in the cold, when i start it up, it will run on all 3 perfect, until it warms up, then drops #1!
I hauled the carbs apart, everything is clean and stock besides the 45 pilot jets, which are supposed to be 40's. Could this cause my # 1 to not burn when at idle??
Some help would be greatly appreciated guy, as i Just put 8 tooth drivers, 1.75 back country track, re done both clutches, put a mbrp race can, etc.
ottawaair
New member
Have you tried another CDI ?
do a compression test? might be a good idea to rule out a half dead cylinder.
jaws jr
New member
Bad crank seal?
Rustman
New member
almost seems like a plugged pilot, although you mentioned you cleaned them. I actually think I know that sled. I'm assuming you bought it from Lincoln, NB. That sled came from the US and could be clogging pilots even after you cleaned them because of the ethanol souring or gumiing up. Only reason I think this is because I had the same problem, I bought an SRX from the US and I had to clean my carbs 3 times before it cleared all the crud. Now, if you drained and started with fresh gas then I'm not sure. Does flipping the choke help at all?
otis700
Member
pilots
I agree with Rustman, I had a similar problem with my 02 srx. Even after cleanign my carbs which Ive done for over ten years, recently my cleaning methods were not getting the pilots cleaned properly or I would get them clean but they would reclog. The pilots are so dam small on the srx's, I find there harder to keep clean with the new fuel these days. I actually spend ten bucks every year now and replace them with new ones. : )
Good luck.
I agree with Rustman, I had a similar problem with my 02 srx. Even after cleanign my carbs which Ive done for over ten years, recently my cleaning methods were not getting the pilots cleaned properly or I would get them clean but they would reclog. The pilots are so dam small on the srx's, I find there harder to keep clean with the new fuel these days. I actually spend ten bucks every year now and replace them with new ones. : )
Good luck.
FJViper
New member
Did you try a new plug? Cheap enough and could rule that out atleast. Check plug cap too for proper resistance. 5k ohms? (Have to check on that) those pilots are a pain in the a** though. Sometimes they look clean but.......I clean mine twice during the season after the initial clean in the fall.
Last edited:
mattysmith440
New member
yup i drained everything and started with fresh gas. still the same. and hey rustman, that is the sled i have. any more info on it? the guy i bought it from claims to know very little about the sled. i know it has been sunk in a bog, because i took the reeds out and they were full of mud and grass, and the seat foam was SOAKED.
compression is 130 on all 3, ive tried numerous brand new plugs, ive tried a brand new cdi, stator, flywheel and coil. i have the 40 jets ordered, because 45's will just burn my motor up here in labrador.
but ya rustman, get back to me on some info if ya could!
compression is 130 on all 3, ive tried numerous brand new plugs, ive tried a brand new cdi, stator, flywheel and coil. i have the 40 jets ordered, because 45's will just burn my motor up here in labrador.
but ya rustman, get back to me on some info if ya could!
wow puzzleing. if theres any reminents of water in the bottom end from it being sunk... that would be enough to put out spark. thats the only other thing i can possibly think of myself. good luck man! sounds like you covered it pretty throughly tho...
You indicated the plug is wet..correct? Perhaps you want to check the float assembly / needle and seat for that carb (#1 cylinder) to ensure that it's not sticking... maybe messed up fuel flow????
ohh and make sure there are no blockages in the pipe that goes to that cylinder.
make sure those reed valve are not broke ...... if not check the needle and seat ...block pilot would result in dry plug
mattysmith440
New member
carbs have been thoroughly cleaned and inspected, everything is fine. brand new q-6 main nozzles, main jets are stock. cold start it will run on 3 cylinders till its warm, then run on two. its only until i give it a bit of gas just to get it moving, then she kicks in on three. im extremely confused, and do not understand it at all, very puzzling indeed!!!
the plugs gets soaked when idling. i know its not a spark issue. could it be getting too much air, that it wont correctly burn off the mixture? but that dont make sense either. HELP!
the plugs gets soaked when idling. i know its not a spark issue. could it be getting too much air, that it wont correctly burn off the mixture? but that dont make sense either. HELP!
Float could be stuck open and flooding out the cylinder. Needle and seat in perfect shape? What does the filter hat look like?
staggs65
Moderator
modsrx said:
I'm with mod, especially since you said they were full of grass and mud. make sure the petals are seating properly
mattysmith440
New member
brand new reeds were installed.....
I'll add another item to the list,how about the choke linkage is it actuating fully open and closed?Otherwise with the info you've given I'd have to say your looking at a carb issue either a sticking needle and seat,plugged jet or perhaps even a float that has a pin hole in it and not working right.
one thing i noticed. you never mentioned that you cleaned your screens these are often neglected because a lot of people dont konw about them. they are in your carbs. each carb has its own indiviual fuel screen behind the float and seat. not saying its the problem but also another check to add if you didnt already. when idoling the cylinder may be running out of fuel when you rev it up the fuel pump pushes harder and helps force fuel through the partially clogged screen. when adding fuel stabilizers for the first time like startron these will clogg up pretty fast. because of freeing of foriegn deposits. these screens are very fine mesh and easy to clog.
Last edited:
SRX_700 said:
X2 look at the needle and seat, if its not sealing off your float level will be high and make that cylinder very rich and it will most be noticeable at idle/low speed, once you get up half throttle to wide open engine will burn excess fuel and run on that cylinder. Choke plunger not seating is easy to check right on the sled, start it up and take a penlight screwdriver, simply push back on the plunger piston and see if the cylinder picks up, should seat back all the way.
I had similar problem with an SRX for the states. Pilots were plugged. Would only run on 2 cylinders. If I dumped a bit of gas down the cylinder it would run fine for a few seconds. You did however mention that the plug was wet on that cylinder which indicates that you are getting fuel. When you pull the sled over do you get fire on that plug?