1990 Phazer troubles. Please HELP

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mtnsledder600

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Joined
Jan 27, 2004
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4
Location
southeast michigan
Well guys, any help will be greatly appreciated. KBXSRX told me to post in here hoping i would get some answers. I have been working on a 1990 phazer for about a week now trying to figure out a problem that has arose. What happens is it will start fine, with no problems and idle for as long as you want it to. Then it will start off and go slow fine.. but as soon you get into the throttle, she bogs like the choke is stuck open. I have taken the carbs off, adjust them, cleaned them, check the float height, cleaned/checked the reeds, new coil, plugs. I just cant figure it out. The TORS is working fine. I just dont know what else to do. Can anyone please point me in the right direction?
 
Yeah, but even up on a jackstand, it will bog out really bad. It just wont go any higher. Do you really think the clutches would do that? I can check the operation of the rollers and the arms in the primary and the secondary helix and "rollers" to make sure they are all good, but i doubt that is the problem.
 
Is everything stock????

Any mods or changes since it last ran well? What about the air box?

When you cleaned the carbs, did you change out the jets? Always good practice to replace the jets whenever your cleaning the carbs. Cheap insurance.

Have you check compression?

GOOD LUCK
 
see if you can get another set of carbs...on all my phazers i have owned i have had to replace the carbs on a few because they just totally shit to bed.cleaned adjust & all they were just junk.
 
No mods at all. What about the air box. I was going to check that becasue it almost seemed like she was getting choked. Didnt change teh jets, but they were clearly clear with no problems. I dont think i would be able to get another set of carbs because i dont really have my buddys who ride these jokers.
 
In the bottom of the carbs are two rubber plugs. If you knock one of these off or put it in the wrong hole/s it will run just like you are describing. I had this happen to me once when I was changeing jets in the cold.
 
i ran in to a problem simular to that last year a a buddys sled..
i dont remember what the dealer did...but i will ask him..
we changed everything...it was still the same.
the dealer had it 10 mins..and 50 bucks later...it is still running awsome..
i will let you know what was done soon....
i remember it was something simple.
 
I made a mistake with the rubber plugs once many years ago. Forgot where they went and thought no way they would put a plug over the pilot jet. And it ran like crap until it was revved out, but it also didn't idle good was only firing on one cylinder, way too much fuel. So if it is idling fine I don't think it is the rubber plugs.

Another problem I had once many years ago, was sled idled fine, was a little burbly off idle, but got really bad gas milage. So not thinking right and riding in a new area I think the pilot circuit is rich and change pilots, pilot screw, still runs bad. Then for some reason I look at the choke lever and notice it is not seating all the way and play with the cable and no improvement, so pull the chokes out of the tubes and one had a broken spring as well as some grunge. Found a spring that would work temporarily and was good to go.

I would be inclined to go with Mr Sleds thought and have has this problem many times with Phazers through the years. Check the sliders in the primary clutch. For some reason they will get tight, they get a little dirty and scratched up and do not slide smooth and the clutch starts sticking. I have taken them out on a trip when new parts weren't available and filed them down for a quick fix. Don't know why but they seem to swell up and the clutch will hang. First time I ever noticed this, was running the sled on a stand and revved it up, and the clutch would hang and them snap shut with a bang on deceleration. Also seem to have to replace the sliders every couple of years.
 
does it fowel plugs??
i dont know for sure...but the dealer was talking about a fuel regulator..
i know its a long shot...but its worth looking into...
it dont sound like it would affect it....but thats what was done to the one i was telling you about.
 
Jeeze, i already switched tehm plugs around. I didnt think there shoulda been one on the pilot circut. It didnt affect the sled. I guess them plugs where in the right hole. So it still runs the same. I will check on the clutch. I am going to take out the airbox and see what happens then. AFter that, i am going to have to find a way to check the fuel pump operation and make sure the fuel lines are not all screwed up. It doesnt foul plugs just sittin there idling. It will idle for a long time with no troubles. The choke seems to be surbrub with no problems. I am going to see if i can get my hands on a set of new carbs.
 
There is nothing that can really go wrong with those carbs. As long as all passages are clean. I still think the plugs are installed improperly. If not I may have a set of carbs. I can look thru my parts of you want me to. ALso have you checked to see if your reeds are ok? One other thing happened to me one time. If your sled sat thru the summer and this is the first time out. I had a mouse make a nest in the exhaust pipe. It took me a while to get it cleaned out. It also would not rev over about 5500. Other than the possibilty of a bad fuel pump there can't be to many other things.
 
Phazer problems

I agree with most about the carbs, airbox and exhaust clogg. I had a fuel pump problem once and it did act simular! Have you checked your fuel filter? Have you checked all your idler wheels (bearings) in the rear suspension? I have seen a frozen ideler wheel cause a bog or lower drive bearing that seizes under load. Un hook your drive belt and how does the motor run with no load? CDI box can also cause same type of symtoms, Hope it helps! I had one that had over 10,000 miles and really never had hardly any problems. Good luck it is a rock hard tough little sled and worth your time to fix!
 
phazer

I had very similar problems with my 84 phazer.It started and idled fine,but had no power.I cleaned the carbs before the start of the season.
Unfortunately ,I'm not sure what exactly fixed it but here is what I found. My fuel filter in the tank was boken in pieces. A piece of plastic from the filter traveled through the fuel line to the fuel pump.
Also,It seemed like one of my fuel lines was collapsing.It was that clear blue Lemans polyurethane which did not hold up well.I replaced all my fuel lines with tough fuel injection line.It might be overkill but I don't want this problem again.
One more possibility.One of the motor mount bolts worked its way loose.This put the clutches out of alignment.
I think the restricted fuel lines are what was causing this problem.
Now it is solid and power is what it is supposed to be.Good luck.
 
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