Question about Coleman Powermate 3500 Watt Subaru High Perf Engine Pm0433500 Portable Generator
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Posted on Jan 02, 2017
SOURCE: i can't start my generator
Hi Chuck and welcome to FixYa, I am Kelly.
First off will it fire over if you add a splash of gas to the throat of the carb?
No = you probably have a stuck valve. I just add gas straight to the spark plug hole and slowly pull the recoil through with the ignition off. Most of the time it works to free sticky valve stems after 2 or 3 cycles of adding gas and slowly pulling the recoil through. Then you have to place rags on the cylinder head to catch all of that gas as you pull the recoil through rapidly for expell the gas. WIPE up any residual fuel before attempting a start.
Still no start check compression... If you don't have a compression tester you can make a poor mans tester... Form a paint brush handle to fit into the hole tightly so that is does not extend into the cylinder any farther than the spark plug would. Pull the recoil.... It should LAUNCH the paint brush out of the hole quite some distance and with force.
Yes it fires: SEE BELOW
If this unit had been sitting for some time there are some things you should do: (I note you said you cleaned the carb but the steps below are what need done on a unit that was idle for an extended period)
1. Clean the fuel float bowl
2. Make sure the main fuel jet orifice located in the area where the float bowl nut or solenoid attaches the float bowl to the body of the carb is cleaned. It will have a pin hole in it that ports fuel to a brass tube at the 6 o'clock position in the throat of the carb. The jet is removable but...most of the time you have to modify a regular screwdriver by grinding off some of the wide portion of the blade shank to make it fit the slot in the orifice and the body of the carb. If you use a screwdriver that is too small it will damage the jet and the only way to get it out is to drill it out VERY carefully.
THE PIN HOLE of the main fuel jet MUST BE VISIBLE
3. Check fuel flow to the carb via the float needle, With the float bowl off, place a spray paint can lid under the float and turn on the fuel selector. The spray can lid should fill in about 10 seconds.
If you do not have this amount of fuel flow then remove the main fuel line from the carb and check flow again. If you still have fuel flow problems
a. Check gas tank exit port for obstructions
b. Check feul flow beforr and after the fuel filter (if used).
c. Check fuel flow before and after the fuel shut off / fuel selector Many fuel selectors have a sediment bowl under the selector.. if yours had a sediment bowl remove the bowl and clean out the contents.
4. You have good fuel flow to the carb manifold....
a. Recheck fuel flow at under the fuel float with the float down. It must provide a reasonable fuel flow that would fill a spray can lid in around 10 seconds. If you still have fuel flow problems only at the the float needle remove the float and float needle. Also the main fuel line. Spray carb cleaner from the flat needle seat are to the fuel manifold and then from the manifold to the float needle seat.
5. Float check... must shut off fuel flow as it is raised to level i.e just as it reaches level.
b. Reassemble and test.
This USUALLY does the trick... if not I need the model number of your generator that starts with a "P" so I can look up the engine and carb data.
Given you have already cleaned up the carb I think you may have a valve stem that is slowing the operation of the valve.... or preventing it from closing (
Thanks for choosing FixYa,
Posted on Aug 26, 2011
SOURCE: powermate 5000er 10 hp won't
Make sure that the generator is full of oil. It has a low oil level sensor that will ground the spark if the oil is low. If you have filled it to FULL with oil and still have the problem disconnect the low oil level sensor (one wire) and check for spark again. IF you now have spark the oil level sensor has either failed or is dirty. (yes you can clean them with carb cleaner.)
If after doing the above you still have no spark... I need 2 things.
1. the actual model number off of the generator Will start with PM or PMO
2. the engine model number / type / series number off of the engine
Thanks for choosing FixYa,
Posted on Aug 27, 2011
SOURCE: My Coleman Powermate 7000 won't
I not you said you "checked the oil level" My experience with most portable generators is that they must me positioned as level as possible and the oil level must be fully serviced as full as you can get it without oil leaking back out of the dip-stick hole on units WITHOUT an extended dip-stick. Unless those conditions are met the low oil level sensor ends up presenting a false low oil signal and it grounds out the ignition. DO you have Spark at all? If you do have spark and it still does not run respond with the MODEL number off of your ENGINE and I will show you where the main fuel jets are located so you can make sure the orifice is clean.
Some units have a fuel solenoid that presses into the main fuel jet recessed area and shut off the fuel to the carb. This is also an area that debris causes havoc.
Posted on Aug 29, 2011
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