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Why will my effing truck not crank?!?! 22r on pane

TacomaJD

I LIKE CHEAP STUFF.....
Joined
Oct 28, 2010
Messages
14,441
Location
Rainsville, AL
Beyond aggravated with this. Toyota pickup with 22r on propane.

This issue started 2 rides ago at Hawk Pride. It ran fine all day at HPO, rode all day and into the night. Flopped over on a creek on a drunken stooper later that night. Winched back over, continued riding. Never noticed anything different, but then again, I was blowed out drunk running over every obstacle we came to, also. Next day, we come back to the park ready to ride....it turned over a little longer than usual before it crunk, and it ran like ****. Give it throttle and it'd start cuttin out, let off throttle too quick, it would die. Never has done this. It's always ran flawless since I've had it (going on 2 years). Anyways, when it'd die or if I cut it off to raise the hood and check around, it would always crank back on it's own, just kept turning over longer than normal before ignition.

Continued riding throughout that day and the whole running shitty thing went away, but it was easy to go dead if I let off the throttle too quickly...and each time it took longer and longer to crank. Eventually, it would not crank, just continuously turn over. Brad Evans, mentioned vacuum leak, so we looked for potential vacuum leak, couldn't find anything out of the ordinary. Some guy walked up, can't remember his name, and said go try to crank it while I hold this spring loaded button down on the vaporizer...sure enough, it crunk right up. From then on, it took someone holding that button down while I turn it over, for it to crank. So basically I cannot crank it without two people....

Messaged the GotPropane guy and he said it's either a vacuum leak or the big screw on the carb has vibrated out and is running too lean. Well upon inspecting the screw, I highly doubt that's the case because the spring that's on it to keep it tight does it's job, because it has sufficient friction against it and doesn't just turn super easily. I turned the screw half turns both ways, trying to crank it with each minor adjustment, with absolutely zero difference. Ran it all the way in, and all the way out...still did not crank. There aren't just a whole lot of vacuum hoses on it, and all of them are either plugged or go to something....so I've pretty much ruled that out too.

Could there be something wrong with the vaporizer since holding that button down will make it crank?? I have no idea as to exactly how they work to imagine what could be wrong with it internally. There's a holethat's threaded on the front side of the vaporizer and when I push that button, it makes a brief spewing sound and you can see something inside it move up and virtually close off that hole...should that hole be open like that? Maybe something was there before and vibrated out?

Also, I think when I flopped in the creek at HPO that night, the small filter that is on top of the valve cover fell off. I noticed it gone the next day while checking around under the hood and had never noticed it gone before. Riding that day and the next, it blew or spilled a little oil out on top of the valve cover. Surely that hole being open now couldn't have anything to do with vacuum could it? Gotta get another little filter to put on it.

Any ideas of other **** to check? I'm at the end of my wits trying to figure out why it won't crank or do you think it may be the vaporizer? Surely somebody else has went through this before.
 
Re: Re: Why will my effing truck not crank?!?! 22r on pane

See pics below for the little hole on the top-front of the vaporizer that's open and also the missing filter on the valve cover...

patezady.jpg


semudaze.jpg
 
Re:

Yeah I mean, even if I had some way to hold it down while starting it by myself, that still wouldn't explain why I've never had to do this before. Something is certainly wrong somewhere, I just don't know what. Is it a thing to "rebuild" a vaporizer, like send it in to GotPropane? Guess I should call them and ask these same questions.
 
I've had a similar problem on my buggy. It was a bad vacuum leak. My motor is so wore out now that it won't pull enough vacuum to open the lockout and crank consistently. I have to crank mine on starting fluid the first time each day, same thing at higher rpm's. I would bet it's vacuum related.
 
Is the coolant low? Mine did the same thing and its because the reg was freezing due to lack of water flowing through it.
 
The 22r in my old truck did the same thing. All off the cheap vacuum block offs had dry rotted and created a huge leak.
 
Wow what a read! Get a filter for the valve cover that's the fresh air for the crank case! It defiantly sounds like a vacume leak when you flopped it could've jarred the pipe going to the mixer and cracked it or just loosend it?
 
Re: Re: Re: Why will my effing truck not crank?!?! 22r on pane

al1tonyota said:
Wow what a read! Get a filter for the valve cover that's the fresh air for the crank case! It defiantly sounds like a vacume leak when you flopped it could've jarred the pipe going to the mixer and cracked it or just loosend it?

Lol, wanted to explain all the details around when it started fawking up.

Which pipe exactly are you talking about? I guess I'll start unbolting **** and looking really close at what every thing involving vacuum for cracks and ****. I hate chasing down things like this.
 
Re: Re: Re: Why will my effing truck not crank?!?! 22r on pane

AdamF said:
Is the coolant low? Mine did the same thing and its because the reg was freezing due to lack of water flowing through it.

Not sure? I will check.
 
The large pipe coming out of the front of the vaporizer going to the mixer Get it running then spray brake parts cleaner around the carb base and all of the mixer and the vaporizer and see if anywhere makes it run better or die
 
Plug that hole in the valve cover and the vaporizer first. All the button does like mentioned above is provide a shot of propane to help starting. Also like mentioned above, you have to have good vacuum to the lock off to get it to open so propane will flow to the vaporizer. Try sucking on the vacuum line going to the lock off a few times and then try cranking it. If it starts, lock off is working and the vacuum line or its source is causing the problem. You can get parts to rebuild any part of the system from any forklift repair shop or the guy in B'ham who is on here some that sells propane stuff.
 
Re:

I know your chasing fuel but I just went through something like this and it turned out to be o2 sensor. I know I'm kinda off but I chased the fuel issue for a whole day before I found the sensor. Not sure if you have one though. Good luck

Sent from my DROID RAZR HD using Tapatalk
 
Has it got electric solenoid in the supply line before the mixer ?
 
When I was running pane, I had to rebuild the vaporizer once. Super simple to do though. Just order the rebuild kit. You could have a torn diaphragm. $12-20 for the kit.
 
Re: Re: Re: Why will my effing truck not crank?!?! 22r on pane

KVINSON said:
Has it got electric solenoid in the supply line before the mixer ?

Yes it does!

Hope Springs Hauler said:
When I was running pane, I had to rebuild the vaporizer once. Super simple to do though. Just order the rebuild kit. You could have a torn diaphragm. $12-20 for the kit.

Hmm....would be nice if it could be fixed for about 20 bucks.
 
Im sure its something small I know those solenoids are for safety but I didn't use one on my 22R not saying that's the problem but its something else in the system that has to work to let the LP pass thru
 
Re: Re: Re: Why will my effing truck not crank?!?! 22r on pane

Coolant is not low, that's ruled out.

KVINSON said:
Im sure its something small I know those solenoids are for safety but I didn't use one on my 22R not saying that's the problem but its something else in the system that has to work to let the LP pass thru

Here is a pic from the underside of the vaporizer and you can see the line and solenoid going into it.

judu2usy.jpg
 
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