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K&B 7.5 Outboard not getting Gas

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K&B 7.5 Outboard not getting Gas

Old 08-28-2003, 11:10 PM
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gambit7613
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Default K&B 7.5 Outboard not getting Gas

I just bought a tunnel hull with a K&B 7.5 Outboard liquid coold, non-remote needle. It doesn't seem to be getting gas from the tank. I have had the exhaust pressure line on, had the tank above the engine to get gravity to help but still no go. Any ideas?

Thanks in advance

Keith
Old 08-29-2003, 12:34 AM
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Default K&B 7.5 Outboard not getting Gas

with your tank in its normal position, disconnect the fuel line from the carb, then disconnect it from the pressure side. with the tank full, blow through the pressure side. Check what happens, still no fuel? Check to see if you are getting air bubbles while blowing on the pressure side, if you are getting air bubbles while blowing on the pressure side check to see if you have the right line on the right side. continual checking the fuel filter, fuel lines.
Old 08-29-2003, 02:41 AM
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Default K&B Problem

The tank flows fine, no air bubbles. Filter is new and everything seems to work fine. If I back the needle valve way out on the carb and raise the tank it will flow gas, but shouldn't it draw some up the tubes when the engine is turned over?
Old 08-29-2003, 01:39 PM
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Default K&B 7.5 Outboard not getting Gas

If you are spinning the engine over with a starter, yes it will draw fuel to the engine. Try spinning the engine with your starter while holding your finger over the end of your exhaust. If this does not work, pull your needle out, check for trash or anything that could block the flow.
Old 08-29-2003, 09:35 PM
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Default K&B 7.5 Outboard not getting Gas

I got it to turn over now, but as soon as I remove the starter the engine dies. It will not stay running.
Old 08-30-2003, 12:06 AM
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Default K&B 7.5 Outboard not getting Gas

switch the glow plug to a new one, sometimes a bad plug will glow when you check it out of the engine.
Start the engine with the carb almost closed off, if it runs in this position, then richen the mixture, if it hydro locks lean it.
Also the engine needs to clean itself out.
Check to make sure that all of the bolts and nuts are tighten.
make sure that the carb is seated all of the way down with a good seal.
let me know if any of this helps or not
Harold
Old 09-01-2003, 02:21 AM
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gambit7613
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Default K&B 7.5 Outboard not getting Gas

Got it running now, but as soon as I take the glow stick off it dies?? Too rich, needle not right? I don't know what else to look at.
Old 09-01-2003, 07:38 PM
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Default K&B 7.5 Outboard not getting Gas

Did you try another glow plug yet? It is sometimes hard to see if it has any damage like a broken coil wire. It might be getting just enough of a connection when you hit it with a glow driver but will die after it is disconnected. It probably happened from having a too lean condition. Try the needle at around 3-1/2 turns out from the fully closed position.
Old 09-01-2003, 08:01 PM
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gambit7613
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Default K&B 7.5 Outboard not getting Gas

Which needle the high speed on on the carb, or the alen key one on the side of it?
Old 09-01-2003, 08:39 PM
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Default K&B 7.5 Outboard not getting Gas

The one on the side. the one sticking up at usually an angle by the throat of the carb is for adjusting the idle speed. The one inside the throttle arm is the low speed needle, don't mess with that one on the older carbs. The newer ones have a "wheel" or round plate on the side for low speed.
Old 09-01-2003, 09:35 PM
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Default K&B 7.5 Outboard not getting Gas

Ron, do you have MSN or ICQ. It would be easier to talk. Let me know or email me keithbeerling@hotmaildotcom
Old 09-01-2003, 10:22 PM
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Default K&B 7.5 Outboard not getting Gas

I have ICQ when I turn it on. It used to come on automatically. My ICQ # is 129260130.
Old 09-30-2003, 11:31 PM
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woodbw
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Default RE: K&B 7.5 Outboard not getting Gas

Hey Gambit I am a member of the Winnipeg Rudder Benders and one of the five boats I race is a 7.5 OB tunnel. If you have questions or problems give me a call and you can drop over with your boat and we can sort it out.
Brad Wood
896-4259

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