GeneralLee

  • Karma: +10/-0
200 merc
« on: July 07, 2015, 05:31:20 PM »
Just recently purchased a baker tunnel with a 200 merc black max on it. Can anybody recommend a shop in the lake elsinore area or does anybody on here work on these things???

I'd love for someone to take a look at it because I have no idea what Im looking at hehe.
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GT Jets

  • Karma: +192/-0
Re: 200 merc
« Reply #1 on: July 07, 2015, 05:34:16 PM »
Was this hull involved in an on trailer incident? And is it red?

Sent from my SCH-I545 using SoCal Jet Boats mobile app

  • Boat #1: 1992 Carrera 20.5 Elite (I/O bitches)
  • Boat #2: 19' Bubble deck Jet BBC Berkeley
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If i get some free time tonight at work, ill play with it and post it for everyone to see.

Time to man up and yank it John!  :banghead:
Ray

GeneralLee

  • Karma: +10/-0
Re: 200 merc
« Reply #2 on: July 07, 2015, 05:36:08 PM »
Was this hull involved in an on trailer incident? And is it red?

Sent from my SCH-I545 using SoCal Jet Boats mobile app

Not that I know of...it's white and red but mostly white.
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GeneralLee

  • Karma: +10/-0
Re: 200 merc
« Reply #3 on: July 07, 2015, 05:37:49 PM »
This is the one
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todd98se

  • Karma: +1/-0
Re: 200 merc
« Reply #4 on: July 07, 2015, 06:09:51 PM »
Is it running? At a minimum you should change the lower end fluid, replace all fuel filters, rebuild the fuel pump, change all the bleed lines, new plugs, new thermostats, new poppet valve assembly, verify max timing, remove the idle module, remove the oil injection and switch to premix. Run good quality 91 octane (no 10% ethanol preferred) and use good quality oil like Quicksilver Premium Plus or Pennzoil Synthetic.


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GeneralLee

  • Karma: +10/-0
Re: 200 merc
« Reply #5 on: July 07, 2015, 06:28:29 PM »
Is it running? At a minimum you should change the lower end fluid, replace all fuel filters, rebuild the fuel pump, change all the bleed lines, new plugs, new thermostats, new poppet valve assembly, verify max timing, remove the idle module, remove the oil injection and switch to premix. Run good quality 91 octane (no 10% ethanol preferred) and use good quality oil like Quicksilver Premium Plus or Pennzoil Synthetic.


Sent from my iPhone using SoCal Jet Boats

Yes it runs well it ran hehe...po told me the forward/reverse cable needs to be adjusted. Clunks once or twice before going into gear. Shops around here are telling me that can't be adjusted it's time for a new cable.

I use quicksilver oil and only 91...I took the boat out for 4th of July to Big river and on the last day coming back from the dam she started dying out on me anything after 3k. She will go over 3k for 3-4 seconds but then dies. I have to go back under the seat and prime her again.

I'd love to do all of the above mentioned things but I have no idea how to haha.
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Ralph Brunt

  • Karma: +51/-0
Re: 200 merc
« Reply #6 on: July 07, 2015, 07:03:55 PM »
Call pat
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GeneralLee

  • Karma: +10/-0
Re: 200 merc
« Reply #7 on: July 07, 2015, 07:25:16 PM »
Call pat

I'd love to but pat and I aren't on best terms. I'd rather have someone else from the site look at it or if anybody can recommend a shop near me that would be great. Thx.
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GT Jets

  • Karma: +192/-0
Re: 200 merc
« Reply #8 on: July 07, 2015, 07:30:42 PM »
You need to replace the fuel pumps, flush out the scavenging hoses. Water pump impeller, do a compression check yada yada blah blah blah...

If the cable ends are starting to separate at all, the cables need replacing.

If I were closer, I would take a look at it.

Compression check is paramount. It should be checked every so often. (like twice a year) and a notebook kept.

This particular engine is known to puke the bottom cylinders because of a scavenging problem.

Who fuel oil are you using?

GT
  • Boat #1: 1992 Carrera 20.5 Elite (I/O bitches)
  • Boat #2: 19' Bubble deck Jet BBC Berkeley
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If i get some free time tonight at work, ill play with it and post it for everyone to see.

Time to man up and yank it John!  :banghead:
Ray

GeneralLee

  • Karma: +10/-0
Re: 200 merc
« Reply #9 on: July 07, 2015, 07:52:15 PM »
You need to replace the fuel pumps, flush out the scavenging hoses. Water pump impeller, do a compression check yada yada blah blah blah...

If the cable ends are starting to separate at all, the cables need replacing.

If I were closer, I would take a look at it.

Compression check is paramount. It should be checked every so often. (like twice a year) and a notebook kept.

This particular engine is known to puke the bottom cylinders because of a scavenging problem.

Who fuel oil are you using?

GT

Compression check was done at the lake elsinore marine before I purchased it. 110 all the way across. According to po he bought the motor from a shop in fontana and he showed me the receipt for 3200 bucks.

I have no idea how to replace the fuel pumps. If someone has a link or a step by step instruction how to I'd do it.

The cables don't look cracked dried worn or separating.
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GeneralLee

  • Karma: +10/-0
Re: 200 merc
« Reply #10 on: July 07, 2015, 07:54:35 PM »
Btw I'm using 91 octane and quicksilver oil.
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GT Jets

  • Karma: +192/-0
Re: 200 merc
« Reply #11 on: July 07, 2015, 07:57:51 PM »
Btw I'm using 91 octane and quicksilver oil.

I run Amsoil 100:1 premix in all the two strokes on the family... I run them all at 50:1. Quicksilver is OK, not the best.

What is the serial number on your engine? (different years have different pumps)...

GT
  • Boat #1: 1992 Carrera 20.5 Elite (I/O bitches)
  • Boat #2: 19' Bubble deck Jet BBC Berkeley
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If i get some free time tonight at work, ill play with it and post it for everyone to see.

Time to man up and yank it John!  :banghead:
Ray

GeneralLee

  • Karma: +10/-0
Re: 200 merc
« Reply #12 on: July 07, 2015, 08:08:21 PM »
I run Amsoil 100:1 premix in all the two strokes on the family... I run them all at 50:1. Quicksilver is OK, not the best.

What is the serial number on your engine? (different years have different pumps)...

GT

I do run 50:1 quicksilver. Serial # 6436473. Thx gt
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lbhsbz

  • Karma: +29/-1
Re: 200 merc New
« Reply #13 on: July 08, 2015, 12:56:22 PM »
Cool boat...I almost bought that last year.

Have you done a compression check yet?  If not, do it.  A healthy stock 200hp merc should make between 115-125psi.  Mine makes about 75psi, but that's besides the point.

If you don't know much history on the engine...and I imagine you don't since the boat had a Johnrude engine on it a couple years ago and the merc is a new addition, then start with the following:

Water pump impeller
thermostats
Lower unit oil
check all fuel lines, replace as necessary, and make sure all the clamps are nice and snug.  I prefer the spring type clamps on these. 

Does this boat have a throttle pedal and separate shifter or is it still using the original controls with the throttle/shifter all in one?



"soft" transitions into running like shit means it's fuel related...most likely the lines are degrading a bit and the clamps are losing tension...it doesn't take much for the pump to draw a wee bit of air at one of the fittings and lose prime temporarily.  Mine does this on the first trip of every season.  If it still runs like shit after sorting out the fuel lines, rebuild the fuel pump...kit is cheap, takes about 15 minutes.

If you plan on keeping it, get rid of the oil injection (merc has a kit...be sure you order the O-ring too since they decided not to include it with the dummy plug) pre-mix it.

Get yourself the Seloc manual on the engine.  It's an excellent book and has all the information you'll ever need, including how to properly adjust the shifter cable.

Call me before you change the water pump...I'll tell you the easy way to do it.   Order up a new anode too since it'll probably crumble when you take it off.


If nothing else works, sink it.  Mine seems to have picked up 10mph since I pulled if off the bottom of the river. :screwy:

Oh, and quicksilver oil is too expensive.  Keep an eye out for Pennzoil premium plus or Pennzoil XLF...excellent oils, and you can get 'em for about $15/ gallon at walmart.  Autozone had it on sale last weekend for $10/gallon, not sure if it's still going though.
« Last Edit: July 08, 2015, 01:12:08 PM by lbhsbz »
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