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Old 07-17-2011, 08:40 PM   #1
landers96
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Default ez no go

I have a 1983 ez go gas. I have spark, gas, and it won't fire. I have even tried spraying starting fluid in the spark plug chamber and still nothing, not even a sputter. I have 90 pounds of compression. I have no idea of where to go from here. I have also checked grounds. Any suggestion would be appreciated. thanks
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Old 07-18-2011, 07:25 PM   #2
landers96
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Default Re: ez no go

Today I pulled the ignition coil off and put it on a friends cart and it ran so that eliminates that. Can anyone give some suggestions what to check next.....I'm lost
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Old 07-18-2011, 08:49 PM   #3
Dave Box
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Default Re: ez no go

90 psi is really on the limit but even so the cart should run. I would stop spraying starter fluid into the engine you are going to wash away the oil and hurt the cylinder.

You say you are getting a spark; a nice big fat blue spark? Put the plug back in and crank it in the dark to make sure there are no sparks where you don't want sparks. Sometimes with the plug lead on a worn lead will leak through the insulation and short the plug which looks fine when it is pulled out. Also use a new plug, I have seen on several occasions that when a 2 cycle plug craps out no amount of cleaning ever makes it work properly.
If this is not the answer then we should look at air leaks, the PG series will not tolerate a leak. With the engine cranking spray some WD40 or similar around the joints in the caburetor and also onto the rear seal in front of the clutch where the crankshaft comes out of the engine.
Let us know what you find
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Old 07-18-2011, 09:18 PM   #4
landers96
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Default Re: ez no go

I have already replaced the plug and plug wire with new one's. I am going to check the pulsar coil tomorrow. I pulled the ignitor coil today and put it on a friend cart and his ran. Is there another coil somewhere or is the just the ignitor coil and the pulsar coil? Sorry if dumb questions, I've read so much now that it's all running together.lol
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Old 07-18-2011, 10:19 PM   #5
invalidsession
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Default Re: ez no go

Quote:
Originally Posted by landers96 View Post
I have a 1983 ez go gas. I have spark, gas, and it won't fire. I have even tried spraying starting fluid in the spark plug chamber and still nothing, not even a sputter. I have 90 pounds of compression. I have no idea of where to go from here. I have also checked grounds. Any suggestion would be appreciated. thanks
Pull off the plug wire and intake hose to the carb. Put the palm of your hand across the carb intake and see if you can feel either a positive or negative pulse when the engine is spinning. NO MORE STARTER FLUID please, that muck causes havoc. You can use an unlit propane torch to let gas into the intake, or some folks recommend brake cleaner. The days of Grandma's Dodge Dart requiring a jolt of starter fluid on pension collection day are long gone. It'll wash off your cylinder walls and remove the protective oil, seep past the rings and dilute the oil amongst other horrors.

Chris.
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Old 07-19-2011, 01:28 AM   #6
skimaniac6
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Default Re: ez no go

Not to hijack the thread but I am having the same problem. I pulled the flywheel and found the seal had been blown out, I replaced it and still nothing . It is pumping gas and sparking but not so much as a shudder. I pulled the clutch and it looks like the seal is fine, I have about 120 so I would think the top end is fine. I will try the carb idea tomorrow, for what it is worth when it is cranking it sounds the same with the carb on and off. I am ready to start this thing on fire and collect the insurance, . BTW it is a 91 ezgo with a 3pg motor.
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Old 07-19-2011, 07:50 AM   #7
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Default Re: ez no go

So you have done what I suggested and cranked it in the dark to look for electrical leakage and you have a big fat blue spark. So from this information the pulsar, ignitor and coil are all working. (In addition you have tested the coil and the ignitor on a friends cart so we know they are working).

You say that you have checked the grounds. Did you remove the lug on the frame, remove the three cables and grind the frame to bare metal? Did you then sand the cable lugs to bare metal and bolt up tight? You should have 3 cables, one to the battery, one to the F-R switch and one to the engine, check?

If the answer to all this is an unqualified "HELL YEAH" then lets move on.

One of the differences between a 2 stroke and a 4 stroke is that a 2 stroke needs crankcase pressure to operate. This pressure is created by the downward stroke of the piston and is sealed by the piston rings and the crankcase seals. This pressure does two things,
a) It moves the fuel mix from the crankcase to the cylinder
b) It operates the fuel pump.

If your crankcase pressure is low for any reason your engine will not run. I suggest that you pull the fuel line to the carburetor and crank the engine (and I don't have to point out the safety implication do I?). You should see a big healthy pulse of fuel, not a dribble, not a trickle but a stream of pulses of gasoline.
This is a test of your crankcase pressure so give that a go and report back.


Skimaniac, you can't judge a seal's integrity by looking at it. If the front blew out I bet the back is worn out (and the back wears more than the front). Replace the back seal and hold them both in with a drop of Loctite blue and I bet you will be up and running.

Dave
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Old 07-19-2011, 09:44 AM   #8
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Default Re: ez no go

Skimaniac,

Before torching your cart, let BCM know, as he is looking for a canopy for his....

On a side note, you did say you had fuel pumping. Dave is likely right, both seals should be changed, though you may be able to get to the clutch side one while it is still in the cart. However, with my 3PG, I had new seals, and fuel pumping, and still had no start.

The cause was the carb, though I think a suspect vacuum line from the crankcase to the fuel pump was a contributing issue. Check the vacuum line for cracking and age - it's likely due for a replacement. Also take off the carb, clean all the jets, make sure the float and the intake jet are working properly, and clean the feeder screw at the bottom of the bowl thoroughly.

FWIW, I cleaned my carb three times before things smoothed out and started working properly including taking a wire brush to the inside of the bowl to remove old oxidized gas and oil.

Also, if you haven't removed the oil injection and started premixing, this may be a good time to do it.
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Old 07-19-2011, 09:57 AM   #9
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Default Re: ez no go

Ski - I agree with Scooter and Dave, just because a seal *looks* good, deoesn't neccesarily qualify it as such (trust me - voice of experience here).

As to the carb, I have pulled mine twice this year already (and yes, I have new filters, etc - even replaced the lines) due to jets plugging up - most likely just a rude fact of life on these older carts, it's amazing where poop will build up over the years and then suddenly cut loose on you and wreak havoc with the jets. Here's the diagram for your carb with the usual suspects circled - all the jets should be blown clean, the needle valve and seat need to be addressed too as they like to stick shut, which doesn't allow fuel into the bowl - a little time and a couple of bucks for a can of carb cleaner goes a long way with these (again, provided you have fuel and crankcase pressure)

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Old 07-19-2011, 10:07 AM   #10
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Default Re: ez no go

And one last lesson learned - don't overtighten bolt 12. The inside of the bowl is notched to line up with the uptake holes in the bolt to allow fuel to flow into it.
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