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Skifreeq1 · Oct 1, 2013, 05:46 AM

Skifreeq1 — New Member
Sep 28, 2013 04:59 PM
Hey people. Got a craftsman 917.28826 24 horse b&s intek motor. Just stopped running last night. Pulling the plugs, wet with gas. Checked for spark, had good spark. Plenty of fuel exiting the fuel line into the inlet for the carb. If I dump a little gas in the carg it runs great till that's gone. Took a screwdriver and tapped the electrical device attached to the carbs float bowl cover, tried to start and it ran for a couple of seconds. Took carb off and inspected the float. Everything was spotless free of dirt and moving as it should. Any visible orifaces ( little holes) looked good. Could it be that electrical thing attached to the carb. Can that be jumped out to see if it's the problem. Any help for this novice would be greatly appreciated.

Skifreeq1 · Oct 1, 2013, 05:47 AM

A little follow up. Tried jumping what I believe to be the electric fuel shut off and blew the inline 20 amp fuse. So I guess you can't jump that out, at least how I did it. I just can't believe from reading a ton of posts regarding similar issues where people go and replace the carb. How the heck does a carb work perfectly one second and the next it's bad. Don't believe it and half the time after being replaced it doesn't solve the problem. Don't really want to be aparts changer rather troubleshoot it appropriately.

DG · Oct 1, 2013, 04:38 PM

Doesn't take much in the carbs now days.
I soak them over night , works most of the time.
Might take the fuel solenoid out cut the tip off and put it back in.

Skifreeq1 · Oct 1, 2013, 06:14 PM

Originally Posted by DG

Doesn't take much in the carbs now days.
I soak them over night , works most of the time.
might take the fuel solenoid out cut the tip off and put it back in.

Thanks for the reply. Unscrew solenoid from the float bowl and cut the tip off. What does this thing do. Also not sure if you saw my previous post describing the whole problem.

crigby · Oct 1, 2013, 09:00 PM

Hi,
I would say you have hit upon your problem. That is the anti-backfire solenoid and to seals off the fuel flow when it does not have 12V DC on it. I would check for voltage first, first at the solenoid, and if there is none then at the key switch to see if the problems are at those locations. Those are cheaper places to look first.
Peace,
Clarke

crigby · Oct 1, 2013, 09:03 PM

Hi,
Cutting the tip off will subject your valve train to failure if the engine is not throttled down for a few seconds prior to shut down.
Peace,
Clarke

Skifreeq1 · Oct 3, 2013, 05:59 AM

Originally Posted by crigby

Hi,
Cutting the tip off will subject your valve train to failure if the engine is not throttled down for a few seconds prior to shut down.
Peace,
Clarke

Hey Clarke.
Thank you very much for the reply. I will try what you said and get back as soon as possible.

DG · Oct 4, 2013, 08:03 PM

Not true

Skifreeq1 · Oct 5, 2013, 09:54 AM

Originally Posted by Skifreeq1

Hey Clarke.
Thank you very much for the reply. I will try what you said and get back as soon as possible.

Hello. Back again. Definitely have voltage(13), to be exact at the solenoid. So, either the solenoid is bad and this is my problem, or its not bad and its something else. I can't imagine it being something else at this point because as I said it runs great if you dump some fuel down the carb. Can throttle up and engage the blades till it runs out the fuel I dumped down the carb. I guess I could cut the tip off as one member suggested and if it runs that must be the problem. Then just go get a new one and install it. How can I be absolutely sure the solenoid is it. I understand there are no absolutes in life besides death and our ever increasing taxes. Looking for to your reply. Thanks a lot again .

DG · Oct 5, 2013, 12:37 PM

I've been running mine for four years without one .I work on newer mowers every day some have it some don't .

Skifreeq1 · Oct 8, 2013, 05:11 PM

Originally Posted by DG

I've been running mine for four years without one .I work on newer mowers every day some have it some don't .

Well it appears that the fuel shut solenoid wasn't it. Took off the white tip and reinstalled everything and still it didn't start. Once again, if I dump fuel down the carb the thing runs great till its out if the fuel I just dumped into it. Anyway to tell if the float is sticking for some reason. Also with the fuel line off the carb, what kind of flow should I expect out of the hose into the carb when cracking it over. I have what I would describe as a good trickle of fuel. Not a complete say 5/16 or 3/8 diameter flow off fuel but enough to fill the carb up. I would assume that once it starts up the fuel flow would increase. Also after the fuel filter the line goes into this circular thing attached to the valve cover which has an inlet and an outlet for the fuel line and another hose coming from the valve cover. Doesn't look like it can be taken apart and cleaned. I'm now at a loss of what to do next. I just don't want to have to call a service guy for this I really think I should be able to figure this out.

Skifreeq1 · Oct 9, 2013, 09:23 AM

Originally Posted by DG

I've been running mine for four years without one .I work on newer mowers every day some have it some don't .

Hello again. Took the tip off the fuel solenoid and reinstalled it. Didn't work. Again if I dump some fuel down the carb it runs fine. Got fuel dumping out of the fuel filter on the outlet side so the filter is not the issue. From there it flows into this circular black thing that has an inlet and an outlet and another hose going from the black thing to the valve cover. When I start it by dumping fuel into the carb I get a fairly good trickle out of the fuel line. The line size is either 3/8 or 5/16 and the flow from the line is not those sizes. Is that black thing a charcoal filter. Maybe it's clogged. At a loss of what to do now. I don't want to have to call a service guy. This is crazy.

Skifreeq1 · Oct 9, 2013, 09:26 AM

Originally Posted by Skifreeq1

Hello again. Took the tip off the fuel solenoid and reinstalled it. Didn't work. Again if I dump some fuel down the carb it runs fine. Got fuel dumping out of the fuel filter on the outlet side so the filter is not the issue. From there it flows into this circular black thing that has an inlet and an outlet and another hose going from the black thing to the valve cover. When I start it by dumping fuel into the carb I get a fairly good trickle out of the fuel line. The line size is either 3/8 or 5/16 and the flow from the line is not those sizes. Is that black thing a charcoal filter. Maybe it's clogged. At a loss of what to do now. I don't want to have to call a service guy. This is crazy.

Sorry about the duplicate replies. Didn't see the one I wrote up yesterday so I tried to duplicate it. Either one should explain where I'm at with this mess.

crigby · Oct 12, 2013, 05:26 PM

Hi,
The black thing is the fuel pump and you should get a pulse of fuel from it when operating. Sounds as if something is preventing fuel from entering the float bowl, which means inlet needle(hooks to float and is above it) and something above it.
Peace,
Clarke

Skifreeq1 · Oct 16, 2013, 08:26 PM

Originally Posted by crigby

Hi,
The black thing is the fuel pump and you should get a pulse of fuel from it when operating. Sounds as if something is preventing fuel from entering the float bowl, which means inlet needle(hooks to float and is above it) and something above it.
Peace,
Clarke

Hey. First, thanks for your knowledge. Second, I found a crack in the vacuum line running from the fuel pump to the valve cover. Wrapped it some electrical tape and it started up and ran but only with the choke on. When I say it ran it was running at full throttle pretty good, go to throttle down it would start to stall and I would have to mess with the choke and throttle to keep it running. Intermittent backfiring at times. It wasn't like kaaablam backfire but more of that intermittent burp while running at full throttle. Going to check for vacuum leaks around intake and areas I was troubleshooting , any other guesses.

crigby · Oct 17, 2013, 10:49 AM

Hi,
This is likely your engines parts manual:
http://bsintek.basco.com/BriggsDocum...ryAVJ1DajI.pdf
And item #918 is the vacuum hose, part #694000. Would be wise to replace it rather than tape it; I doubt anyone but distributors stock it so it is an order-as-needed item.
It is likey that it is running intermittently rich and lean to cause that running situation.
Peace,
Clarke
PS A new fuel filter cannot hurt.

Skifreeq1 · Oct 17, 2013, 03:34 PM

Originally Posted by crigby

Hi,
This is likely your engines parts manual:
http://bsintek.basco.com/BriggsDocum...ryAVJ1DajI.pdf
And item #918 is the vacuum hose, part #694000. Would be wise to replace it rather than tape it; I doubt anyone but distributors stock it so it is an order-as-needed item.
It is likey that it is running intermittently rich and lean to cause that running situation.
Peace,
Clarke
PS A new fuel filter cannot hurt.

Hello again. I'm going to replace that vacuum line. Thanks for the parts list. Also going to do a tune up including the fuel filter. Ran the engine for a while and it appears to have run through whatever was making not run smooth. Going to pull the carb and clean it to be sure. Hopefully it will still run when I'm done. If it doesn't I'm sure ill be back posting again. Everyone that replied were really helpful and I can't thank you all enough.

crigby · Oct 17, 2013, 03:46 PM

Hi,
If it is venture inside the carb you want to do(A little Yoda imitation) then maybe you would apprecaite the link to the outdoorpowerinfo.com link on part one of that tutorial(part two is linked at the bottom of it) at:
Disassembly, Cleaning and Repair of Briggs Intek V-twin Two-Barrel Nikki Carburetor - Part 1
Peace,
Clarke