โDec-10-2009 06:16 PM
โJul-21-2011 11:46 PM
falconbrother wrote:
Just make sure you get one with sufficient fuel flow capacity.
โJul-21-2011 11:39 PM
TreeSeeker wrote:
I assume that the oil pressure switch is to cut off the fuel in case of an accident (instead of an inertia switch)? I am also guessing that you need a manual override to get the engine started since there is no oil pressure before the engine starts? So you turn on the manual override until the engine is started, then turn it off? If so, that does seem prone to accidentally leaving it on.
Inquiring minds want to know...
โJul-21-2011 06:42 PM
โJul-21-2011 03:43 PM
โJul-21-2011 10:45 AM
โJul-21-2011 10:39 AM
ALnCORY wrote:Yes I do believe a electric fuel pump will solve my problem for sure and also take just a bit of work off of the cam shaft too.:h
Yeah trucker, that is a different problem than I have. Like others have stated, mine stays primed for a couple of days at least... Electric pump is probably the way to go.
โJul-21-2011 10:36 AM
TreeSeeker wrote:I will supply power to the fuel pump by the key switch, And a Toggle switch also, Just because I have some extra lighted toggle's and with one more lighted up will just look good.Skimask wrote:
I added an oil pressure switch as well as a manual power switch to control power to it. Just a regular ol' 5-7psi $30 fuel pump.
I assume that the oil pressure switch is to cut off the fuel in case of an accident (instead of an inertia switch)? I am also guessing that you need a manual override to get the engine started since there is no oil pressure before the engine starts? So you turn on the manual override until the engine is started, then turn it off? If so, that does seem prone to accidentally leaving it on.
Inquiring minds want to know...
โJul-21-2011 09:57 AM
โJul-21-2011 07:22 AM
Skimask wrote:
I added an oil pressure switch as well as a manual power switch to control power to it. Just a regular ol' 5-7psi $30 fuel pump.
โJul-21-2011 06:02 AM
lzasitko wrote:That is one thing I like about the electric pumps, You can hear it until it build's up to operating pressure. Thanks again.
Our MH came with an electric fuel pump, but was thinking that it got done when they first converted it to run on either propane or gas. Has worked good and you can hear it pretty good when you first turn the key and you can also here the tone of it change when pressure in the carb is up. Once started you don't even notice the pump any more. They mounted ours between the two tanks on the underside of the floor. They also had fuel 3 filters. One in the carb itself (a small metal mesh), there was also another aftermarket replaceable filter beside the engine. Last year coming back through the mountains I had some issues going up long steep grades, get part or most of the way up and it would start kicking and bucking a bit. If I slowed down it would smooth out so we limped back to Calgary that way. No problem when it was flat or downhill. Talked to a number of people and they all thought coil or ignition module so in the end I replaced them. Left Calgary to go to Red Deer and then back to Three Hills and just getting to Red Deer it jerked a couple of times. After that it was fine. Got to my cousin's place outside Three Hills and next day we got it into his shop. He has a farm and in one building has a pit that is about 30' long so we could get under it. He was sure that it was a fuel filter problem. Anyways we found another filter that was mounted up above the fuel filler necks for the dual tanks so very hard to get to and see. Changed it and no other problems getting home (another 450 miles or so)
โJul-21-2011 06:00 AM
skimask wrote:Thanks you for the info, I'm going to just go with an electric fuel pump, Your right it seem's to be the best way to go.
Your fuel pump thinking is almost dead on. A leak in the diaphragm will usually dump into the crankcase and wash out the oil. A rotten 'poppet valve' (or whatever they call that thing in mechanical pumps that kinda acts like a float needle) would allow fuel to be drawn back into the tank assuming the tank was fairly close. Next time it happens, I'd pop the air cleaner and have a look down the throttle bores and see if it looks wet.
(after-thought...I never smelled gas either but I think that's because after the fuel dumps into the intake, the smell kinda stays there because the throttle plates are closed)
I think the electric fuel pump option is the best idea. I mounted mine up near the front/rear tank selector knob, which is basically under the seats and ran the carb fuel line up the back of the tranny to the carb, totally bypassing those fuel lines that run between the block and the exhaust manifolds which seems to me like they'd soak up a LOT of heat while idling in traffic or driving slowly. I added an oil pressure switch as well as a manual power switch to control power to it. Just a regular ol' 5-7psi $30 fuel pump.
My thinking is that is almost TOTALLY eliminates the possibility of vapor lock and is one less mechanical thing to fail. I can hit the switch and make sure my carb is full before even hitting the key.
โJul-20-2011 09:22 PM
โJul-20-2011 07:23 PM
โJul-20-2011 06:50 PM
TreeSeeker wrote:Mine has no leaks and I have never smelled gas, Even with the dog house pulled and still never any smell of gas.:h
I have had both problems. I had to have the carb rebuilt twice due to the plastic part leaking. You could really smell the gas that leaked.
And it is very hard to get started after sitting for a week or so. After you get it started, then it will restart right away the next time or even a few days later.
Whatever the cause, it appears to be a design issue as we all seem to have it.
โJul-20-2011 06:47 PM
ALnCORY wrote:Mine is ok for maybe an hour, After starting I can shut it off wait 5 mins and it will start before a half turn of the engine let it sit for a hour and it will fire at first because there is gas inside the pump that is in the carb, Just enough for one squirt of gas and then the bowl and gas line is empty and it will have to crank until the gas is pumped back up from the tank.
trucker,
my old 360 requires alot of pumping to get fuel up if it has sat more than a couple of days. It is still the old mechanical fuel pump. I didn't catch if yours drained out right away or is like mine... ok for a few days but then needs pumping.