No Start 05 FourTrax 350 - Honda Foreman Forums : Rubicon, Rincon, Rancher and Recon Forum
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post #1 of 7 (permalink) Old 04-18-2017, 10:28 AM Thread Starter
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Join Date: Apr 2017
Location: Southern Ontario
Posts: 21
No Start 05 FourTrax 350

Hello everyone,
I have a bit of a saga here and have been browsing these forums and since i haven't had any luck thought it a good idea to join and post my issues here. Seeing the number of members who know their stuff I'm hoping somebody can help me out. (Sorry in advance for the long winded post.)
A couple of weeks ago I removed the plow and the missus and I went for a ride. We did go through a coupe of deep, icy puddles. A few miles later the ATV died but started right back up again. A few more miles and it slowly lost power and died again, this time for good.

Thinking I might have got water in the engine I have:
Dumped and replaced the oil & filter.
Dumped and replaced the fuel.
Replaced the plug.
Cleaned and re-jetted the carb.
Removed the spark arrest.

No luck except for the occasional exhaust backfire.

So, believing I have eliminated fuel and air issues I moved along to spark.
I do have spark at the plug but I'm not sure it's sufficient for combustion.
Plug sparks at TDC and compression is good.

Now here's the rub...
The Clymer says I should be getting over 100 VDC at the ignition coil.
With a digital multi-meter grounded with the positive probe on the yellow-black lead into the
coil I'm registering only @ 1.0 volts and yet the plug sparks ???
Granted, it's a small blue spark but it's there. (Not robust, and no snapping sound.)

I'm leaning towards a faulty ICM since I'm fairly sure it got submerged in the icy water?

Any help would be much appreciated.
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post #2 of 7 (permalink) Old 04-18-2017, 11:10 AM
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Welcome to the forum.


Here's a link to a free factory service manual.


https://drive.google.com/drive/folde...lRpdjBDQjl5TGs

I'd be looking at the voltage regulator above the right rear tire.

They seem to be a problem area on the 350 Ranchers.

"The Good One"
2009 Foreman 500FM Green
27" Execs on Rubicon rims, Perfex
Heated grips and Thumb , HID's
5K Viper Max winch

"The Wreck"
2009 Foreman 500FM Green
Perfex with HL springs
27" Mudbugs on Rubicon rims
Heated Grips and Thumb, HID's
4K Viper Max winch

"The Project"
2006 Foreman 500FM Green
27" Titan 589's Perfex with HLsprings
3K Superwinch winch

"Sandy" aka the wife's
2009 475 Rancher AT Tan
26" Mudbugs on Rincon rims
Warn winch. Foreman pod light with HID, SRA gear reduction
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post #3 of 7 (permalink) Old 04-18-2017, 11:32 AM Thread Starter
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Location: Southern Ontario
Posts: 21
Thanks Jeepwm69,
I will d/l the manual to see if it provides some further direction.
I did do a "visual" inspection on the regulator and the continuity check on the
alternator/stator harness and all checked out okay as far as I could tell but I'm sure
the regulator also took a swim. I've also been advised that a faulty regulator results
in issues with the head and tail lights which are functioning okay, but I would assume
lighting issues due to a bad regulator would only crop up if the bike was running...
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post #4 of 7 (permalink) Old 04-18-2017, 12:06 PM
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I just rebuilt a 2000 350 for my neighbor. Everything worked fine on his but the battery wasn't charging.


I took the reg plug off and it was melted all to crap inside and one of the terminals was gone.


I had to splice on a new plug and put a new (used OEM from his parts bike) regulator on it and after that it was charging and running fine.


I have another early 350 Rancher now that has also had a lot of wiring work done back around the regulator. It starts and runs but I'm not to the point yet to do any test riding on it.

"The Good One"
2009 Foreman 500FM Green
27" Execs on Rubicon rims, Perfex
Heated grips and Thumb , HID's
5K Viper Max winch

"The Wreck"
2009 Foreman 500FM Green
Perfex with HL springs
27" Mudbugs on Rubicon rims
Heated Grips and Thumb, HID's
4K Viper Max winch

"The Project"
2006 Foreman 500FM Green
27" Titan 589's Perfex with HLsprings
3K Superwinch winch

"Sandy" aka the wife's
2009 475 Rancher AT Tan
26" Mudbugs on Rincon rims
Warn winch. Foreman pod light with HID, SRA gear reduction
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post #5 of 7 (permalink) Old 04-18-2017, 12:40 PM Thread Starter
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Posts: 21
Fresh battery and charges up in 3 hours.
Valve lash also checked.
Gear position indicators (neutral and reverse) light up when they should
so I'm fairly certain my sensor is good.
0.7 volts where it should be - pulse, ICM.
The only thing I can't reconcile is the lack of peak voltage at the ignition coil.
No, I don't have a peak voltage tester, but I figure I should be getting some sort
of reading with either my digital or analogue multi-meter on the yellow/black lead
if I'm getting any spark at all.
I have a 74 Triumph TR6 so I'm fairly well versed when it comes to turning
wrenches. (and they call Lucas electricals the Prince of Darkness...)
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post #6 of 7 (permalink) Old 04-18-2017, 01:57 PM
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LOL. Dad had a TR3. He sent me this awhile back.






The Lucas motto: "Get home before dark."

Lucas denies having invented darkness. But they still claim "sudden, unexpected darkness"

Lucas--inventor of the first intermittent wiper.

Lucas--inventor of the self-dimming headlamp.

The three-position Lucas switch--DIM, FLICKER and OFF.

The other three switch settings--SMOKE, SMOLDER and IGNITE.

Lucas dip-switch positions: LOW and BLOW

The original anti-theft devices--Lucas Electric products.

"I've had a Lucas pacemaker for years and have never experienced any prob...

If Lucas made guns, wars would not start either.

Did you hear about the Lucas powered torpedo? It sank.

It's not true that Lucas, in 1947, tried to get Parliament to repeal Ohm's Law. They withdrew their efforts when they met too much resistance.

Did you hear the one about the guy that peeked into a Land Rover and asked the owner "How can you tell one switch from another at night, since they all look the same?" "He replied, it doesn't matter which one you use, nothing happens!"

Back in the '70s Lucas decided to diversify its product line and began manufacturing vacuum cleaners. It was the only product they offered which didn't suck.

Quality Assurance phoned and advised the Lucas engineering guy that they had trouble with his design shorting out. So he made the wires longer.

Why do the English drink warm beer? Lucas made the refrigerators, too.

Alexander Graham Bell invented the Telephone. Thomas Edison invented the Light Bulb. Joseph Lucas invented the Short Circuit.

Recommended procedure before taking on a repair of Lucas equipment: check the position of the stars, kill a chicken and walk three times sunwise around your car chanting: "Oh mighty Prince of Darkness protect your unworthy servant."

Lucas systems actually uses AC current; it just has a random frequency.

How to make AIDS disappear? Give it a Lucas parts number.

Recently, Lucas won out over Bosch to supply the electrical for the new Volkswagens. So, now the cars from the Black Forest will come with electrics supplied by the Lord of Darkness -- how appropriate!

Lucas is an acronym for Loose Unsoldered Connections and Splices.



I don't like electrical stuff, especially when it deals with engine innards.


This help any?


How to test the stator/ignition pulse generator(pick up) - Honda TRX Forums: Honda TRX 450R Forum

"The Good One"
2009 Foreman 500FM Green
27" Execs on Rubicon rims, Perfex
Heated grips and Thumb , HID's
5K Viper Max winch

"The Wreck"
2009 Foreman 500FM Green
Perfex with HL springs
27" Mudbugs on Rubicon rims
Heated Grips and Thumb, HID's
4K Viper Max winch

"The Project"
2006 Foreman 500FM Green
27" Titan 589's Perfex with HLsprings
3K Superwinch winch

"Sandy" aka the wife's
2009 475 Rancher AT Tan
26" Mudbugs on Rincon rims
Warn winch. Foreman pod light with HID, SRA gear reduction
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post #7 of 7 (permalink) Old 04-18-2017, 02:25 PM Thread Starter
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Location: Southern Ontario
Posts: 21
Hey, thanks for the chuckle.
Oddly, I haven't had any real issues with the electrical on the TR6 - but about the only
non-stock part on the car is the 74 Delco-Remy alternator I put in place of the Lucas
around 8 years ago. The TR3 is a sweet ride.

Yeah, I've done the continuity/non-continuity check on the IPG/alternator/stator and everything checks out
fine.
Given that I've been all over the bike I'm pretty much down to "stationary parts that can't be tested but look pretty",
ie: the ICM or the Regulator.
I'm trying to borrow a peak voltage tester and if I can verify low voltage at the ignition coil I will start
working my way backwards utilizing my knowledge and experience of the completion backwards principal.
(BTW when I do resolve a problem I always post what the issue/fix was to help other members.)

I want to get this bike running so I can get it out of my garage space and bring home the TR for the summer.
Oh well, at least I got the John Deere and my other tractor up and running this past weekend.
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