EVO won't start
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Intermediate
Joined: Jul 2008
Posts: 46
Likes: 0
EVO won't start
I have an 1985 FXWG. I haven't rode it since last year.
I tried to start it this weekend but it will not start.
It turns over fine, but there is no sign of life.
The battery is new.
It has good compression about 125psi in both cylinders cold and dry.
It looks like fuel is getting into the carb when I twist the throttle. I can see gas inside the carb openning.
It's getting a spark, its not blue, it looks orange, and little weak to me but its steady.
The coil is new and so are the spark plug wires.
The spark plugs are black and look wet, but I think its from the gas.
It always ran rich.
Any ideas?
Thanks in advance.
I tried to start it this weekend but it will not start.
It turns over fine, but there is no sign of life.
The battery is new.
It has good compression about 125psi in both cylinders cold and dry.
It looks like fuel is getting into the carb when I twist the throttle. I can see gas inside the carb openning.
It's getting a spark, its not blue, it looks orange, and little weak to me but its steady.
The coil is new and so are the spark plug wires.
The spark plugs are black and look wet, but I think its from the gas.
It always ran rich.
Any ideas?
Thanks in advance.
Tourer
Joined: Feb 2008
Posts: 328
Likes: 13
From: Trabuco Canyon, California
If the bike has just been sitting then maybe it is just a bad electrical connection...A weak spark seems to indicate a bad electrical connection somewhere too. Since you have already replaced your plug wires and coil, I would check the connector from the ignition module going to the sensor and clean it. I would also check the battery and ground terminal connections. Another possiblity is a bad ignition module. Also, make sure your plugs are gapped right (spec is .038-.043")....probably worth getting a spare set of spark plugs too.
If the timing is off you'd have starting problems too. It is doubtful the timing just changed but if the VOES is not working you could have that symptom since it changes the timing. Make sure the vacuum hose is sealed good and not leaking. It goes from the carb to the VOES switch mounted underneath the center of the fuel tank ....I am not sure if VOES was used in '85 but I have it on my '86.
Do you still have the original butterfly Keihin carb and manifold compliance fittings? If you determine your spark is ok, then you might have an intake leak....those old fittings had lots of problems...I had my compliance fittings replaced with a SE manifold about 15 years ago to get rid of most of my intake leak probs but still have been plauged with minor probs. I have a new CV carb but just waiting for some parts so then I could hopefully put my hard-starts behind me.
If the timing is off you'd have starting problems too. It is doubtful the timing just changed but if the VOES is not working you could have that symptom since it changes the timing. Make sure the vacuum hose is sealed good and not leaking. It goes from the carb to the VOES switch mounted underneath the center of the fuel tank ....I am not sure if VOES was used in '85 but I have it on my '86.
Do you still have the original butterfly Keihin carb and manifold compliance fittings? If you determine your spark is ok, then you might have an intake leak....those old fittings had lots of problems...I had my compliance fittings replaced with a SE manifold about 15 years ago to get rid of most of my intake leak probs but still have been plauged with minor probs. I have a new CV carb but just waiting for some parts so then I could hopefully put my hard-starts behind me.
Advanced
Joined: Apr 2010
Posts: 73
Likes: 1
From: Harnett County, North Carolina
The evel one
I'm betting the idle jet is plugged. I'd check inside the fuel bowl for contamination and clean those jets good. My last Shovel had a Super G and my idle jet got plugged over the winter. It too wouldn't start but after cleaning the carb it fired right up. Spark is likely to change intensity when running. Fresh gas would also be a good idea.
Road Master
Joined: May 2010
Posts: 931
Likes: 112
From: Oregon
I'm betting the idle jet is plugged. I'd check inside the fuel bowl for contamination and clean those jets good. My last Shovel had a Super G and my idle jet got plugged over the winter. It too wouldn't start but after cleaning the carb it fired right up. Spark is likely to change intensity when running. Fresh gas would also be a good idea.
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Road Warrior
Joined: Sep 2006
Posts: 1,826
Likes: 87
From: Cookson, Ok
Try pecking on the float bowl housing. Happened to me last week. I had drained the tank for removal and started it up before I realized I hadn't put gas back in the tank after I put it back on. Put gas in it and restarted and it only ran for a few seconds and went graveyard dead. Pulled a plug and had fire, twisted the throttle and it sprayed gas, shot some starting fluid in the carb and it would fire but not run. Pecked the float bowl with a screwdriver handle and have lived happily ever after. I suspect the needle in the float had stuck closed but maybe something else was clogged and I broke it loose with the flogging of the screwdriver handle.
Last edited by Lakerat; Jun 8, 2010 at 12:29 AM.
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HDF Community Team
Joined: Dec 2005
Posts: 5,403
Likes: 2,605
From: NC USA
All good advice so far.
Remember, an orange spark (in open air) is likely "no spark" when under compression (at the plug) Also true, that without the carb full of fuel and flowing in the circuits of the carb, they won't fire. A car will because it's downdraft thru the manifold and if you pour enough into a bike, it's usually flooded by the time there's enough in it to do any good.
Remember, an orange spark (in open air) is likely "no spark" when under compression (at the plug) Also true, that without the carb full of fuel and flowing in the circuits of the carb, they won't fire. A car will because it's downdraft thru the manifold and if you pour enough into a bike, it's usually flooded by the time there's enough in it to do any good.