Search found 1071 matches

by C3H8
Sat Sep 12, 2020 10:55 am
Forum: Propane Forum
Topic: Need help with Propane fuel on Tale forklift
Replies: 6
Views: 189

Re: Need help with Propane fuel on Tale forklift

I had another look at the pictures. I'm pretty sure that's a primer. I see a red wire that appears to go to the same location. I expect that red wire goes back to a push button switch on the dash or to the starter solenoid to operate the primer. Pushing the button if it exists will add a little fuel...
by C3H8
Sat Sep 12, 2020 10:50 am
Forum: Propane Forum
Topic: Need help with Propane fuel on Tale forklift
Replies: 6
Views: 189

Re: Need help with Propane fuel on Tale forklift

I can't be sure, however, on closer inspection that vacuum hose could be going to a primer. I see it is plugged into the throttle body but I can't see the other end. If it is plugged onto a solenoid at the end under the cobra it may be a primer to add additional fuel during cranking. The second opti...
by C3H8
Sat Sep 05, 2020 6:00 pm
Forum: Propane Forum
Topic: Need help with Propane fuel on Tale forklift
Replies: 6
Views: 189

Re: Need help with Propane fuel on Tale forklift

Propane has to be treated just like a gas engine in identifying a problem. Do not assume the propane is the problem at first. The carb on there is an IMPCO CA500M-. The dash is followed by a 1, 2, 3, or 4 depending on the intake hose size. I don't see any signs of a filter on the electric lockoff. T...
by C3H8
Tue Aug 04, 2020 12:35 am
Forum: Propane Forum
Topic: Australian GMH HSV 6.0 litre LPi, stalling
Replies: 3
Views: 212

Re: Australian GMH HSV 6.0 litre LPi, stalling

Forgot. There is probably a balance line running from the intake manifold to the LPG regulator. Low vacuum equals load and the drop in vacuum will cause the regulator outlet pressure to increase. There will not be a balance line from the regulator to the air intake like Vialle.
by C3H8
Tue Aug 04, 2020 12:31 am
Forum: Propane Forum
Topic: Australian GMH HSV 6.0 litre LPi, stalling
Replies: 3
Views: 212

Re: Australian GMH HSV 6.0 litre LPi, stalling

Most of the liquid injection systems operate the same. Most start on gasoline and switch to propane automatically. The HSV system states it also switches to petrol at 4000 to 5000 rpm when the load on the valves is higher and switches back automatically when the rpm's decrease. It is supposed to do ...
by C3H8
Tue Jul 21, 2020 8:39 am
Forum: Propane Forum
Topic: Tuning a '92 Chevy G20 350 SBC TBI with LPG installed...
Replies: 14
Views: 580

Re: Tuning a '92 Chevy G20 350 SBC TBI with LPG installed...

Oh! One last item. If you don't have anything attached to that brass fitting it has to be plugged. That is a massive air leak if it is left open and would drastically lean out the mixtures.
by C3H8
Tue Jul 21, 2020 8:36 am
Forum: Propane Forum
Topic: Tuning a '92 Chevy G20 350 SBC TBI with LPG installed...
Replies: 14
Views: 580

Re: Tuning a '92 Chevy G20 350 SBC TBI with LPG installed...

The innovate monitor was not used in my days. I had a look at it and the one conclusion I can come to is that it uses an oxygen sensor for the readings. Typically oxygen sensors require a minimum temperature to work properly. Most require a temperature of 650 degrees to be accurate. Most of todays s...
by C3H8
Sun Jul 19, 2020 2:51 pm
Forum: Propane Forum
Topic: Tuning a '92 Chevy G20 350 SBC TBI with LPG installed...
Replies: 14
Views: 580

Re: Tuning a '92 Chevy G20 350 SBC TBI with LPG installed...

The Chevy G20 vans were always difficult to do because of space. Because of this we selected the 300/50 series mixers over the 425. I made a much cleaner installation with only a small sacrifice in airflow. 432 for the 300/50 and 476 for the 425. The 300 allowed the mixer to be closer to the throttl...
by C3H8
Wed Jun 17, 2020 6:22 pm
Forum: Propane Forum
Topic: Idles at 1250 RPM
Replies: 4
Views: 502

Re: Idles at 1250 RPM

The mixer size is fine. There is usually only one reason an engine idles fast. You have a vacuum leak somewhere downstream of the mixer. Barring that on rare occasions a sticking or loose throttle plate. I would say 90% chance of a vacuum leak. Start looking for a sucked in intake gasket, throttle p...
by C3H8
Sun Jun 07, 2020 5:25 pm
Forum: Propane Forum
Topic: Propane fuel level gauges
Replies: 3
Views: 281

Re: Propane fuel level gauges

We don't know where "Near me " is, however there have always been 2 manufacturers of junior gauges in North America. Rochester and Squibb. Rochester was the most common, probably used in 90% of the conversions. The Rochester and Squibb are not compatible with the in-tank assemblies of each other. Th...
by C3H8
Tue May 26, 2020 9:21 am
Forum: Propane Forum
Topic: 2 300a mixers on 1 modelE evaporator
Replies: 2
Views: 277

Re: 2 300a mixers on 1 modelE evaporator

It's not a matter of feeding the setup. It tied to the demands of the engine. A stock 390 has various HP designs depending on what it was used in. Examples, it was used in large Ford trucks with cams designed for good torque at 2500 to 3500 RPM. In cars like the Ford LTD it was set up for good cruis...
by C3H8
Fri Apr 24, 2020 1:58 pm
Forum: Propane Forum
Topic: 454 turbo impco 425 x2 tuning help
Replies: 20
Views: 1614

Re: 454 turbo impco 425 x2 tuning help

425 mixers only have adjustments for idle and wot. The midrange is controlled by the taper of the gas bullet based on the current airflow. Airflow increases the bullet (air/gas valve) lifts higher allowing more fuel. The midrange can be changed by replacing the air/gas valve with a leaner or richer ...
by C3H8
Mon Apr 20, 2020 2:06 pm
Forum: Propane Forum
Topic: 454 turbo impco 425 x2 tuning help
Replies: 20
Views: 1614

Re: 454 turbo impco 425 x2 tuning help

My error! I just enlarged your photo and see you are piped into the adaptors on top of the mixer already. The system you have should work ok as a balance line. Like you mentioned I prefer not to use 90 degree fittings, however they are available in a formed pipe rather then the style you have. There...
by C3H8
Mon Apr 20, 2020 2:01 pm
Forum: Propane Forum
Topic: 454 turbo impco 425 x2 tuning help
Replies: 20
Views: 1614

Re: 454 turbo impco 425 x2 tuning help

My knowledge of turbo's is limited, however I can see two issues with your system to check out. I would not use the balance port on the 425. It's a 1/8" NPT which means an opening of only about 1/4 inch which you then enlarged to about a 5/5" line. You should pipe those balance lines directly into t...
by C3H8
Mon Apr 13, 2020 3:27 pm
Forum: Propane Forum
Topic: Lean out at WOT. Fine at 3/4 throttle
Replies: 18
Views: 1455

Re: Lean out at WOT. Fine at 3/4 throttle

I must admit to a little frustration here. Lean conditions have a specific process to figuring them out. I made some suggestions earlier and from what I can tell it appears you haven't checked the basics. You keep going back to the mixer and ignoring the process. I'll repeat the process. The system ...