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 > guardian 5500 rv Generac generator problems

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rockwind1

las vegas

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Posted: 09/27/19 10:56pm Link  |  Quote  |  Print  |  Notify Moderator

so it won't start. gas seems to be good and gas was in float bowl. primer pump is working. i rebuilt carb, seemed clean.

cranks over fine, did some other testing, made sure there was gas going to float bowl. and there is, watched it flow out. used some starting fluid in the air filter hole and it ran as long as i was squirting some in every few seconds. so it is not a spark or compression issue. it seems like, assuming the carb is clean, which i think it is cause i cleaned it, it can only be the float, which appeared to be working fine when i had it off,,, or there is this silinoid on the bottom of the float bowl with a red wire going to it, it looks like it turns the main jet on and off. i canm't imagine it going bad but beginning to wonder, anyone have any thoughts on that selinoid that opens and closes the main jet?

* This post was edited 09/28/19 08:18am by rockwind1 *

MEXICOWANDERER

las peƱas, michoacan, mexico

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Posted: 09/28/19 12:13am Link  |  Quote  |  Print  |  Notify Moderator

Upper has different stipduck for other application.

Remove 1 sparkplug

Connect spark plug wire

Lay spark plug on its side contacting metal

You will be looking for a tiny spark jumping on the other end

That will end the spark question

garyemunson

Reno, Nevada

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Posted: 09/28/19 06:05am Link  |  Quote  |  Print  |  Notify Moderator

Generac carbs have very small jets that are easily plugged by gas drying out in the float bowl. Very hard to clean them without making them larger. Why they are considered expendible items.

rockwind1

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Posted: 09/28/19 07:07am Link  |  Quote  |  Print  |  Notify Moderator

MEXICOWANDERER wrote:

Upper has different stipduck for other application.

Remove 1 sparkplug

Connect spark plug wire

Lay spark plug on its side contacting metal

You will be looking for a tiny spark jumping on the other end

That will end the spark question


what is the other application? and the upper doesn't have a dipstick. i was wondering if the upper oil fill had something to do with the low oil safety shutting off spark. i meant to do that, check the spark, but it looks almost impossible to get the spark plugs out

rockwind1

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Posted: 09/28/19 07:09am Link  |  Quote  |  Print  |  Notify Moderator

garyemunson wrote:

Generac carbs have very small jets that are easily plugged by gas drying out in the float bowl. Very hard to clean them without making them larger. Why they are considered expendible items.


when i cleaned the carbs, the jet on the main did not looked plugged at all, and the jet from the top also did not loook plugged, and the long jet, that has the little holes in the sides, also looked good. any thoughts on where to buy jets if they are bad?

zigzagrv

Nazareth, PA

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Posted: 09/28/19 07:42am Link  |  Quote  |  Print  |  Notify Moderator

I have the same generator in my mh. 1800+ hours on it and it has been very reliable, that is until about 3 weeks ago. Tried to start it for it's monthly maintenance run. Would crank, but wouldn't start. Sounded like fuel pump wasn't getting gas. Changed oil to be sure it was at correct level. Still no start. Anyway, went on camping trip last weekend and when I pulled into campground, decided to try the generator to run a/c, because it was hot, till I could get to hooking up electric. Pushed the button and it fired right up.

My suspicion was that the gas pickup in the tank may have been clogged and that the drive to the campground shook the debris off.

The only other suggestion is to be sure the battery(s) are fully charged. Mine has difficulty starting if batteries are not fully charged.


Ron

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rockwind1

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Posted: 09/28/19 08:50am Link  |  Quote  |  Print  |  Notify Moderator

anyone know anything about that selinoid that is on the bottom of the float bowl, it must open the main jet

rockwind1

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Posted: 09/28/19 09:22am Link  |  Quote  |  Print  |  Notify Moderator

ok, up date in case anyone with same problem googles this thread. the solenoid on the bottom can get gas in there that just sits and it gets sticky. 2 3/4 inch wrenches and you disconnect it from the jet houseing, spray with carb cleaner until it starts moving easily. you can't do this unless you unscrew the jet housing. jump across battery to make sure it will magnetically suck the plunger back in and hold it in. problem solved! generator started right up.

Darryl&Rita

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Posted: 09/28/19 12:41pm Link  |  Quote  |  Print  |  Notify Moderator

rockwind1 wrote:

anyone know anything about that selinoid that is on the bottom of the float bowl, it must open the main jet

Isn't that a float switch for the fuel pump?


***UPDATE 2006 3500 SRW MegaCab pulling a 2007 fleetwood 5'er

rockwind1

las vegas

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Posted: 09/29/19 07:36am Link  |  Quote  |  Print  |  Notify Moderator

Darryl&Rita wrote:

rockwind1 wrote:

anyone know anything about that selinoid that is on the bottom of the float bowl, it must open the main jet

Isn't that a float switch for the fuel pump?


i don't think so, it shuts fuel on and off to the main jet of the carb. some said it is to prevent backfires when shutting off generator, which makes sense.

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