Restriction Caused by Primer Bulbs on Outboards

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07-10-2010 | 07:12 AM

#11

JIMKID Motorsports

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From: Livonia Mi Usa

no problem that info came from two reliable riggers i asked when i was rigging mine

07-10-2010 | 07:23 AM

#12

CcanDo

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From: DFW

Quote:

Originally Posted by JIMKID Motorsports

no problem that info came from two reliable riggers i asked when i was rigging mine

Jim, How long did it take to start the engines after they had been setting ?

07-10-2010 | 04:05 PM

#13

apache727

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From: St. Petersburg, Fl

My boat sat for a month and I started both motors the other day without pumping the primer ball. Took maybe 5 seconds? I might remove them now after what I'm reading

08-15-2010 | 05:22 PM

#14

CcanDo

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From: DFW

Quote:

Originally Posted by JIMKID Motorsports

i didnt have them on my 1993 300 x eliminated them you dont want the restriction get rid of the factory plastic union also another restrition go from tank to pump with one line no problems dont need the bulb or check valve

Thanks Jim,

We eliminated the bulbs and ran new 3/8" line from tank to engine. We also changed the mechanical pump diaphrams that appeared stretched. Restriction may have caused diaphram damage. Plus, there were little chunks of strange rubber in the mechanical pump.

Then we switched to "Rejuvinate" Mercury 2 Stroke oil, Mercury Tech was convincing. Both the engine and bilge tanks were drained and flushed. The engines were then put in "Brake In Mode" for 120 minutes. That was done to allow the extra addatives to do maximum work.

The engines start and pull much much better. They even sound stronger.