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Author Topic:   Gas Line Primer Bulbs

ibeenfishing posted 02-24-2004 05:09 AM ET (US)

I have a new uninstalled Pate 27 gal. tank and a new OMC gas line. It seems no matter how I mount the gas line the primer bulb will not be pointing skyward as Jimh's new article suggest. The bulb will either be pointed down on the front side or the backside of the tank.
Should I do surgery on this new gas line and try to relocate the bulb closer to the engine?
daverdla posted 02-24-2004 07:11 AM ET (US)
I moved mine closer to the engine two years ago. Simple job. I like getting the bulb back there out of the way.
Dave
bloller posted 02-24-2004 06:15 PM ET (US)
I moved my primer bulb nearer to the engine and pointing upward as well. It solved a fuel delivery problem I was having on my new outboard.
WhalerAce posted 02-25-2004 11:03 AM ET (US)
Let me move a response that I had sent to Jim's reference article thread to here. After complimenting Jim on his usual great job, I said:
One thing I am still curious about, though, and that is the propensity of riggers to want to mount the primer bulb so close to the END of the fuel line (that is, by the engine). It seems to me, intuitively, that the proper place to mount the primer bulb would be as close as possible to the outlet of the tank. This way, you are PUSHING fuel along the fuel line, not pulling it.
I had a case the other day where I could not prime the port engine on my Temptation. (The Temptation underneath the deck looks almost exactly like my Outrage with Whaler Drive did -- by that I mean that coming from the underdeck tank there are two large hoses that run to a transition plate. At this plate are bulkhead fittings that convert the fuel lines to the black 3/8" hoses that then run to the fuel-water separators and filters, and from there to each respective engine). I could pump and pump, but could never get gasoline to flow. I tried all of the usual tricks to make it work (yes, checking orientation of the bulbs, checking for air leaks, etc).
Finally turned out the easiest way to resolve the problem (which mainly showed up of the first start-up of the day) was to add a "primer" primer bulb just a few inches past the previously mentioned transition plate. This allows me to fill the separators and filters with gasoline (and not have to create a vacuum to do it) and get gasoline to the engine filter/carb/whatever with a whole lot less squeezing. I can then reach over the WhalerDrive and prime the last bulb as usual.
I would still like for someone to explain the rationale of pulling the fuel via vacuum versus pushing the fuel from the closest point to the tank.
I appreciate the indulgence.
WhalerAce
jimh posted 02-27-2004 08:29 AM ET (US)
Please move replies to:
http://continuouswave.com/ubb/Forum3/HTML/005566.html

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Author	Topic: Gas Line Primer Bulbs
ibeenfishing	posted 02-24-2004 05:09 AM ET (US) I have a new uninstalled Pate 27 gal. tank and a new OMC gas line. It seems no matter how I mount the gas line the primer bulb will not be pointing skyward as Jimh's new article suggest. The bulb will either be pointed down on the front side or the backside of the tank. Should I do surgery on this new gas line and try to relocate the bulb closer to the engine?
daverdla	posted 02-24-2004 07:11 AM ET (US) I moved mine closer to the engine two years ago. Simple job. I like getting the bulb back there out of the way. Dave
bloller	posted 02-24-2004 06:15 PM ET (US) I moved my primer bulb nearer to the engine and pointing upward as well. It solved a fuel delivery problem I was having on my new outboard.
WhalerAce	posted 02-25-2004 11:03 AM ET (US) Let me move a response that I had sent to Jim's reference article thread to here. After complimenting Jim on his usual great job, I said: One thing I am still curious about, though, and that is the propensity of riggers to want to mount the primer bulb so close to the END of the fuel line (that is, by the engine). It seems to me, intuitively, that the proper place to mount the primer bulb would be as close as possible to the outlet of the tank. This way, you are PUSHING fuel along the fuel line, not pulling it. I had a case the other day where I could not prime the port engine on my Temptation. (The Temptation underneath the deck looks almost exactly like my Outrage with Whaler Drive did -- by that I mean that coming from the underdeck tank there are two large hoses that run to a transition plate. At this plate are bulkhead fittings that convert the fuel lines to the black 3/8" hoses that then run to the fuel-water separators and filters, and from there to each respective engine). I could pump and pump, but could never get gasoline to flow. I tried all of the usual tricks to make it work (yes, checking orientation of the bulbs, checking for air leaks, etc). Finally turned out the easiest way to resolve the problem (which mainly showed up of the first start-up of the day) was to add a "primer" primer bulb just a few inches past the previously mentioned transition plate. This allows me to fill the separators and filters with gasoline (and not have to create a vacuum to do it) and get gasoline to the engine filter/carb/whatever with a whole lot less squeezing. I can then reach over the WhalerDrive and prime the last bulb as usual. I would still like for someone to explain the rationale of pulling the fuel via vacuum versus pushing the fuel from the closest point to the tank. I appreciate the indulgence. WhalerAce
jimh	posted 02-27-2004 08:29 AM ET (US) Please move replies to: http://continuouswave.com/ubb/Forum3/HTML/005566.html