SoCal Jet Boats

Tech Talk => Engine Mechanical / Electrical => Topic started by: fordfan on July 19, 2008, 11:43:23 AM

Title: Need some help here!
Post by: fordfan on July 19, 2008, 11:43:23 AM
Ok guys have a problem with my engine and i'm stumped. It will fire and run then bog out and stall. sounds like it is starving for fuel but there is plenty dumping into the carb. The few times i got it running it would run fine but pop and then stall again. the only thing i can think is that there is something in the carb restricting it. Help :banghead:
Title: Re: Need some help here!
Post by: 429heads on July 19, 2008, 01:38:29 PM
Have you checked Dizz and do you have a coil most or some time they will act like a fuel problem to try new coil and set points could be closed to, You need air, fuel, and spark, to run, look for cheeeby
stuck in carb :mad:
Title: Re: Need some help here!
Post by: GT Jets on July 19, 2008, 02:32:39 PM
Sounds like a failing coil/dist. problem here too, to check to see if its fuel related, try placing a rag over the carb to "choke" it up a bit, I sometimes dampen the rag (with water) just in case she decides to burb some fire out, betting ignition realated though.
Title: Re: Need some help here!
Post by: fordfan on July 26, 2008, 05:44:08 PM
finally got a chance to check it out this afternoon and think i got it. was going to ditch the dual points on the mallory and put in a pertonix but can't get one till monday so tried adjusting the points and changed the condenser and it runs. dropping it in elsinore tommorow to see how it runs. thanks guys for your advice..
Title: Re: Need some help here!
Post by: marceldawson70 on July 27, 2008, 04:07:04 PM
 Before you do anything expensive, do you have a fuel/water seperator filter? I am a boat tech, I have customers come in with these symptoms all the time! 75% of the time its water in the gas!!!!
Title: Re: Need some help here!
Post by: GAWnCA on July 28, 2008, 08:11:26 AM
Before you do anything expensive, do you have a fuel/water seperator filter? I am a boat tech, I have customers come in with these symptoms all the time! 75% of the time its water in the gas!!!!

How about throwing a couple of bottles of HEAT in the tanks and that will take the water out. 
Title: Re: Need some help here!
Post by: fordfan on July 28, 2008, 09:58:28 PM
i just put one on but that was the first thing i checked for filtered some gas and there was no water seperation at all. took it out today and it ran great. still going to upgrade the ignition from points to electronic any suggestions?
Title: Re: Need some help here!
Post by: v-drive video on July 29, 2008, 01:07:25 AM
Sounds like your point gap may have been to wide. Convert it to electronic or buy a new electronic ignition dist.

I always have Dave Lange (in Upland) spin my distributors on his machine and allow him to fine tune the curve to insure everything is perfect.  8)
Title: Re: Need some help here!
Post by: GAWnCA on July 29, 2008, 06:32:24 PM
i just put one on but that was the first thing i checked for filtered some gas and there was no water seperation at all. took it out today and it ran great. still going to upgrade the ignition from points to electronic any suggestions?

Bought the  Mallory YLM567EV from summitracing.com http://store.summitracing.com/partdetail.asp?autofilter=1&part=MAA%2DYLM567EV&N=700+4294908331+115&autoview=sku

Or http://store.summitracing.com/partdetail.asp?autofilter=1&part=PNX%2DD500700&N=700+4294908331+4294840123+4294839065+115&autoview=sku
Title: Re: Need some help here!
Post by: electrowoman on July 30, 2008, 08:31:04 AM
To bad you don't have a spare carb to try.
Title: Re: Need some help here!
Post by: fordfan on July 30, 2008, 05:20:02 PM
I have been looking at the msd and the mallory electronic distributer but i was also looking at the msd marine ignition pakage they have in the jegs catalog but its expensive anyone know if it is worth it? planning a complete engine rebuild this winter no expenses spared i hope. ha
Title: Re: Need some help here!
Post by: Jetaholic on August 03, 2008, 05:00:48 PM
I have been looking at the msd and the mallory electronic distributer but i was also looking at the msd marine ignition pakage they have in the jegs catalog but its expensive anyone know if it is worth it? planning a complete engine rebuild this winter no expenses spared i hope. ha

The 6M-2L is a great investment because it has the rev limiter built in which will save your engine from accidental over rev if your pump unexpectedly unloads on you. My setup is the 6M-2 with the external limiter with the Ready To Run distributor and Blaster 2 High Vibration coil and it works great. Quick starts too!
Title: Re: Need some help here!
Post by: walshmotorsports on August 11, 2008, 10:56:58 PM
 If your considering MSD I do think is a great product. Also myself I have a few hours on Westech Dyno's and for about 300 bucks the DUI dist is a killer buy! Hands down it give MSD a run just put one in my own 18ft boat and ditched the points and they do offer a marine one too. I have to say the power difference is so minimal compared to the money you save, 1 wire hook-up and is tach ready. Good luck, just trying to help you get the most for your buck! "D"  performancedistributors.com
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