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dsalinas1939
Top Member
USA
1323 Posts |
 Posted - 02/27/2017 : 12:44:51 PM
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| not sure if u guys can help i am not familiar with propane vehicles but we have a shop fork lift that runs ok at idle runs ok til half throttle anything past that it starts cutting out its an older nissan with a carb not sure if u guys can help but thought i would ask |
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Fastback
Top Member
1500 Posts |
Posted - 02/28/2017 : 04:56:08 AM
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| Make sure the atmospheric vent on the vaporizer is unrestricted and ignition timing advance mechanism is functioning properly. |
Why yes, the ORIGinal CHARGER is a Fastback |
Edited by - Fastback on 02/28/2017 04:57:37 AM |
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dsalinas1939
Top Member
USA
1323 Posts |
Posted - 02/28/2017 : 05:15:53 AM
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| lol i have no clue about propane so i dont no what i am lookin at is the vaporizer the canister that the main fuel line goes in |
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Fastback
Top Member
1500 Posts |
Posted - 02/28/2017 : 05:27:42 AM
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| Liquid fuel goes in it from tank, vaporized fuel comes out through large hose to carburetor. Not sure about your lift truck but the vaporizers we used back in the day ran engine coolant through them to keep them from frosting up when the propane vaporized. |
Why yes, the ORIGinal CHARGER is a Fastback |
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dsalinas1939
Top Member
USA
1323 Posts |
Posted - 02/28/2017 : 05:51:39 AM
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| yes coolant is runnin thru the thing i thik your talkin about the coolant was very low so i thought that might be it i filled it and it still runs bad but it has two of them the fuel line goes into one then it comes out goes into another one then into the car |
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Fastback
Top Member
1500 Posts |
Posted - 02/28/2017 : 06:29:02 AM
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| Also ignition system needs to be in tip top shape for propane. Make sure cap, rotor, wires, plugs are in first class condition. |
Why yes, the ORIGinal CHARGER is a Fastback |
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krmvcs
Advanced Member
362 Posts |
Posted - 02/28/2017 : 07:12:50 AM
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| ditto what Fastback says. My forklift last week (old nissan motor) was running rough and the culprit was corroded contacts in the cap and rotor. Also double check the vacuum lines from the carb. |
-Ken- |
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dsalinas1939
Top Member
USA
1323 Posts |
Posted - 02/28/2017 : 07:47:42 AM
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| ok guys thanks for the tips when i get a chance to get to work on it i will let u no what happens |
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dsalinas1939
Top Member
USA
1323 Posts |
Posted - 03/08/2017 : 05:50:55 AM
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| ok guys i finally have a minute to look at this i checked the cap and rotor they look good i cleaned it up the plugs look good to likr i said before it runs great at idle all they way to just over half throttle then it starts bucking really bad if u let off to half throttle its runs ok again it has two vaporizers how would u tell if they are bad and which one |
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bwest
Administrator
United States
3820 Posts |
Posted - 03/08/2017 : 06:10:40 AM
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| Seems elementary but make sure the tank is on correctly. |
Bryan |
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dsalinas1939
Top Member
USA
1323 Posts |
Posted - 03/08/2017 : 06:16:22 AM
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| i thought of that i changed the tsnk thinkin it was low but i had it running for fifteen minutes and now if i floor it it revs up great if i hold it it will stay good for bout 5 seconds then start bucking again |
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bwest
Administrator
United States
3820 Posts |
Posted - 03/08/2017 : 06:52:05 AM
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| So, the hole in the ring on the top of the tank is on the bottom? So, if you floor it, it will stay running fine? |
Bryan |
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dsalinas1939
Top Member
USA
1323 Posts |
Posted - 03/08/2017 : 07:14:43 AM
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| when it warmed up i could floor it and it would run fine for few seconds where as when it was cold soon as i floored it it bogged out and surged like i said now that its warm its better and driveable but still bucks some times with load on it and full throttle |
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bwest
Administrator
United States
3820 Posts |
Posted - 03/08/2017 : 12:30:07 PM
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| I'm not very familiar with carbureted propane engines. Have you tried picking the brain of your local forklift shop? I'm sure no matter what brand it is they can steer you in the right direction. |
Bryan |
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dsalinas1939
Top Member
USA
1323 Posts |
Posted - 03/08/2017 : 12:38:54 PM
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| yeah i am bad wit carbs to i a friend thats good wit carbs so gonna give him a call my main thing was the vaporizers y is there two and how and what do they do and do they go bad ? |
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bwest
Administrator
United States
3820 Posts |
Posted - 03/09/2017 : 04:48:49 AM
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| Yeah, I think the diaphragm in there can go bad. But I don't have a lot of experience with those. That is all eliminated on a modern LPI system in these buses. It really sounds like you have something going on in the fuel system. I think I'd just tear into that and see what's going on. Oh, just thought of this, wonder about the regulator? What's the brand and model number on that vaporizer? Is it an Impco? |
Bryan |
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dsalinas1939
Top Member
USA
1323 Posts |
Posted - 03/09/2017 : 06:27:17 AM
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| yes impco VFF30 does that make sense the fuel comes from tank into that vaporizer then comes out and goes right into another one and comes out of that into the carb |
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Fastback
Top Member
1500 Posts |
Posted - 03/09/2017 : 07:20:16 AM
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The Impco VFF30 is a combination fuel lock off and filter, should have a small diameter liquid fuel line in and out of it. The Vaporizer will have a small diameter liquid line going in and a large diameter vapor line going out to carb.
https://www.youtube.com/watch?v=H0egr8gJkQE
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Why yes, the ORIGinal CHARGER is a Fastback |
Edited by - Fastback on 03/09/2017 07:23:11 AM |
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dsalinas1939
Top Member
USA
1323 Posts |
Posted - 03/09/2017 : 08:07:10 AM
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| i watched the video my forklift has an impco and it has another thing looks just like it that say PNG technology and the png says filter regulater the impco one doesnt say anything u think maybe the png one is bad????? |
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bwest
Administrator
United States
3820 Posts |
Posted - 03/09/2017 : 11:33:51 AM
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| That video is funny as heck!!! 40 bucks!! lol! |
Bryan |
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dsalinas1939
Top Member
USA
1323 Posts |
Posted - 03/09/2017 : 12:52:33 PM
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| it was i was like how much black tape u gonna use lol then he said i am not gonna get the part the tape will last a few years lol |
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Topic |
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propane question
