duel fuel problem
hi everybody
i have a 1991 f-250 that runs on both gas and propane. my problem is that it won't switch over to run on gas. it did a couple of weeks ago. when i switch over to gas it doesnt stall it just keeps running on propane. my fuel guage shows that i am running on gas but it doest get any lower because i am accually running on propane still. any help would be much appreciated. thanks trev |
A couple things you can look at are the vacuum/electric solenoid that is supposed to close off vacuum to the propane lock when the unit is switched to GAS. No vacuum to lock = no propane flow to motor - is the way it's supposed to work when it is switched to gas. To check it, switch to GAS and pull the vacuum line off of the propane lock then try to start it. If it doesn't run there is a fuel delivery problem and I would suspect the wiring at the propane/GAS switch. Check for loose connectors at the switch.
Note, MOST propane locks are vacuum operated but I am aware of some electric ones, not sure how those work but I suspect pulling the hot wire off will lock out propane. |
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