New Switch boxes on Merc

[spareparts]

I'll check next week about the batteries, I can't see any reason why they would have any effect on the switch boxes. It could load up the stator's charging circut if you have the high output stator as AGMs and Gel Cell batteries are not designed to handle high amperage or high finishing voltage charging systems. The rare few times I've installed AGMs or gels( i usually talk people out of installing them), I've had to change out the onboard chargers(or change the switch on the back if they have one), and turn the altenators down if they have an adjustable regulator. I will not honor the warranty for labor if I install an AGM or Gel on a customers boat, and I tell them this up front. I know there are a lot of people out there that swear by them, but I can't find a reason to justify their cost, and the reduced capacity of the electrical system if its properlly set up. I put them in the same catagory as split fire spark plugs, I could never figure out why some one would spend $100 on a set of plugs thinking that would fix their boat, but wouldn't pay a profesional mechanic to actually find the problem. I've seen plenty of people that would put $300 worth of batteries in their boat, buut would pay me $100 to replace the crappy battery cables they hooked them up to

[bigshrimpin]

I was so proud of myself for finding a deal on surplus UPS AGM batteries this spring. I got 4 super deluxe Northstar NSB100FT(list price was $468 each) brand new never used for $40 each gov. surplus from Big Hog batteries. I thought I was so smart :)

http://www.wellcraftv20.com/communit...=AGM+batteries

[spareparts]

you're still ahead of the prie of new batteries, I don't think they had anythign to do with the ignition, just check the charging system output of your motor, its usually not problem with old school two strokes, just an issue on anything with a high output altenator. Personally, I can't findd a better battery than the Deka 24-M7 no maintance(same thing as the west marine 1000 MCA white battery), I have sold probably 50 of them in the past 5 years, I haven't seen one of them go bad form other than missuse or lack of use

[Skools Out]

hey while on the mercs this merc 150 on the deck boat i just got has fire on the right bank of cylinders but the left 3 no fire. it's a 1994 Merc Blackmax 150 what ya think?

[THEFERMANATOR]

Originally Posted by Skools Out

hey while on the mercs this merc 150 on the deck boat i just got has fire on the right bank of cylinders but the left 3 no fire. it's a 1994 Merc Blackmax 150 what ya think?

Switch box would be my guess.

[phatdaddy]

swap switch boxes &see if problem follows.

[garbubba]

Thanks for the replies y'all. I have been out of touch for a while. My mom was in the hospital in Pittsburgh over the holidays, it was cold up there.

I still haven't swapped out switch boxes (chore # 1241524) but thats the next thing I plan to do. It sure acts like half the cylinders just drop out. I've had that happen with (i think) older mercs on work boats, the mechanic called it a power pack then.

As soon as I get those switch boxes on I'll let you know how it went.

BTW I've messed with al sorts of high tech batteries & I always come back to a deep cycle marine, it's the longest lasting & toughest battery.

Doug