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The answer I was given does not apply in my case as I have plenty of spark after going down that road as well it is a fuel problem not getting to the motor. This is the first time I have had this sort

Everything except take out the welch plugs in the carb. I have cleaned and cleaned this carb so you could eat off it but I can not get fuel from carb to motor even with full choke. Motor has good compression and spark so it has to be fuel. What's under the welch plugs anyway. Trevor N.Z.

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Have you replaced the fuel filter?
Are the fuel lines in good condition and fitted correctly?
Where have you set the H/L jets on the carbie?

These might contribute to your problem.

Posted on Nov 26, 2014

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The whole question depends on want kind and model of chainsaw you have. It could be 4 stroke but likely 2 stroke. It could have been running before you messed with the carb or not so there could be a reason you cleaned it and that might go a long way to helping someone come to a reason it does not work now but if you keep all these things secret it is hard for anyone to give you anymore advice than you have already gotten. You also do not advise if you have a primer on it or not and unless you have screwed up something in the carb or the gaskets are not sealing it is likely the primer and/or gas line tubing but then again do not know what type of machine you have so.................... If there is no suction when you pull the starter cord you could have an intake leak.

Posted on Nov 24, 2014

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My blower will not start. I took off carb and cleaned it, and is getting gas to it, but still won't start. Did a spark test and plenty of spark.


Is the flywheel on time ? is the worsed answer on this question i guess.

First you must remove the muffler and look at that side on your piston if that is smooth instead of grooves . thats the best answer to make no wasting time to it , if that is grooved you may have not enough compression anymore to get a burning hot mixture of gas.
If you use special alkylat fuel aspen or motomix than it could be that there is to much fuel primered inside, remove the sparkplug and pull the trigger and hold the blower with the muffler down to the ground to release the little fuel surplus clean the sparkplug if it was wet. do not use the primerbulb anymore by the use of alkylat fuel aspen 2t or motomix if there is enough compression and alkylat fuel was used there is may be a good but even to rich H adjusdment on the carburetor but thats better then to lean adjustment (it he may shout in no case) to many rpm will overheat and damaged the piston and cillinder in a short time.

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Runs fine going down road but when you engage blades to mow it starts to back fire but it will keep running


Make/Model/Year/Engine size, these are helpful for a more precise answer.
However, you are describing a backfire problem that occurs when the engine is placed under a load.

The major contributors to backfire under a load (and in general) are:
1.Bad fuel
2.Weak Spark
3.Poor Timing
4.Poor seal due to valve considerations (adjustment and wear).

So here are the fixes:
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  2. Weak spark may be due to coil problems or bad coil gap. Check coil gap.
  3. Change fuel to the highest octane you can buy. Old fuel looses octane and does not burn as hot. Do not store fuel for more than 3 months.
  4. If your engine has a flywheel key, it may be damaged. This will throw off the timing.
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1991 geo storm gsi,Was going down the road fine and all of a sudden It cut off and cannot restart it what could be the possible problem or cuses.


same answer for all cars made 1920 to now.
never restarted ,ever ? gee , a little hint...?
1: lost engine compression hot, (gee forgot to do the 60k serviice/)
2: lost spark , yes, check spark at all 4 cyl. if bad check coil spark.
3: lost fuel or too much fuel called flooding.

one removes a spark plug, it drips of fuel , say all 4.
flooding.
crank motor at WOT, wide open throttle to clear flooding.
if the spark is good and the spark tips are dry, then try test fuel
if car starts and dies. then you lost injection.

easy huh> with the above you know exactly why it fails.
compression bad
spark
fueling.

1991 i think is TBI single injection engine, i can look it up but
no i wont. we need to do the tests first to get there.

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1 Answer

Going down road and it just quit I can here fuel pump working


Check for spark. Remove a plug, attach the wire back on to it, and hold the case to the engine block. Have some one crank the engine and watch for a spark.

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1 Answer

I have a 1992 Oldsmobile Cutluss Supreme was going down road the other night and just died, changed battery after having old one on charger for a day and getting know place, the car now cranks and turns...


to check fuel pressure you have to use a gauge not just push on the schrader valve to see if gas squirts out.these systems run at 35lbs pressure anything much less and it will not start.also check the fuel volume as if its low the pump cannot supply enough to fuel the motor to run it won`t.

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1 Answer

Rpms drop at high speed, mo matter how much gas applied.


Most times they will attach fuel pressure gauge and tape it to windshield or whatever is necessary, then run it down the road to duplicate conditions when you experience your problem. Perhaps fuel pump is getting weak and cannot supply enough fuel to maintain higher speeds etc. Have had ones that had proper pressure when cool, but after running a while, pressure drops right off. It's going to be a process of elimination right now, as no codes coming up, so If you have good spark at all times, then fuel pressure is most logical thing to confirm next. Can you include which engine as well, it may help narrow things down a bit too.

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Hi Dino,
You have sparks and the carbys have fuel in it.......you crank it and it doesn't fire up.....have you tried to use the choke?
After a lot of cranking remove one of the spark plugs and see if its wet with fuel.
I feel probabely the fuel is not entering the combustion chamber.

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Stopped while running


I had the same problem. I found out that the fuel pump was not putting out enough pressure. changed the pump and bam down the road I went.

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