What the h@##

[chadincolo]

Thrashing to get my son's Phazer (86, not a 4 stroke) done for the weekend, had a bad stator. Tear the engine out, find a good stator, put it all together, test and have spark. Put the plugs in, pull it over, nothing. Prime with gas in the cylinders, nothing. Check again, bright blue spark. Small spurt of carb cleaner, nothing. Ok, fine, small spurt of either, nothing...desparate now, check, bright blue spark. Use a lighter, yep, burns the vapor out of the cylinder...pull the pipes, liquid sitting in them. Pull it over several times with plugs out to clear it out. Try again, nothing. That's when I gave up.

Engine has compression, fuel (gas, carb cleaner, and either...), and spark (at least outside the cylinder, new plugs...) So what the #@%% is going on??? Even if timing was out of whack, still would pop, sputter, do something...nope, nothing...ideas? Would like my son to ride it this weekend, but only have one night left to get it running...

 

[Disco Dan Richter]

Coil? Sometimes under compression, they wont fire hot enough with a bad coil.

 

[Linc]

It all depends on what year the Phazer stator came from.I believe they changed the stator and cdi in the latter years.

 

[chadincolo]

Coil? Sometimes under compression, they wont fire hot enough with a bad coil.

Sorry, forgot to add, switched coils too...

It all depends on what year the Phazer stator came from.I believe they changed the stator and cdi in the latter years.

Really? I didn't know that, I know they changed the flywheel to an integral gear for the electric start in place of the bolt on...both engines (good stator/flywheel came off an engine I bought that had a bad cylinder) have the same flywheel, stators looked the same, same wire colors...but if it's firing the sparkplugs on the head, shouldn't it fire them in the cylinder too?

 

[Linc]

If the plugs match then it should work,is the compression ok?

 

[culvert]

what is the compression like on the motor? if no compression it may not fire?

 

[chadincolo]

Compression isn't a problem, relatively new rebuild, didn't pull out my guage, but plenty to pop my thumb off...even with low compression with either, it should at least pop, backfire, do something...

 

[up-high]

Are the plugs new?

 

[muskoka]

You may have done this already but swap the plug caps and wires.( if you have them).

I have seen the caps cause lack of spark under preasure.

Just a thought

Skoka

 

[spomey]

you only need four things

Air, fuel, compression and spark. I am betting the compression is you culprit....

put about 1 oz of 2 stroke oil in each cylinder, rotate the engine a few times to spread out the oil on the cylinder walls, spray a little starting fluid put the plugs in and pull.

low compression will not let the engine even try to start most of the time. yet it still blows your thumb off the empty spark plug hole.

good luck.

 

[Linc]

130 psi if no head work done,any higher with stock carbs and you're asking for trouble.

 

[mmaxcarver]

Go buy new plugs, regardless of presence of spark!!! I've went thru two sets of plugs in the past, before they fired under compression. One set was the original set and the other was my spare set..
Installed the 3rd set and it fired right up....

 

[spring snow hero]

when I can't get a motor to light off and I think all the right stuff is going on I feed it propane from a weed burner torch....unlit of course. propane is pre-atomized and has a huge flamable range. if the timing is right and you have spark and compression it will light of even w/o carbs on it.

 

[pinnedunderdoo#3]

when I can't get a motor to light off and I think all the right stuff is going on I feed it propane from a weed burner torch....unlit of course. propane is pre-atomized and has a huge flamable range. if the timing is right and you have spark and compression it will light of even w/o carbs on it.

never heard of that before ill keep that in mind.... yea i would change the plugs on it for sure and the exhaust aint plugged is it? cause if it has sat for a while there could be a mouse ness or something built up inside.

 

[johnny be bad]

to bad, i just got rid of one of those phazers for real cheap. did you check both for spark or just one? also try some different plugs, i've seen brand new plugs not fire under load?

 

[muskoka]

ttt for ya