Question about Evinrude / Johnson 135-150-175-200 HP 60deg V6 2006 E-TEC Motor Cover Blue

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1986 evin.175hp miss at hi & low speeds 2 mechs so far aux.gas tnks new plugs carbs rebuilt new power pks, replaced timing base new bulb still missing 2000$ so far in it

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If you prime the bulb does it run better ?? fuel pump may be ! fuel lines large bore and connectors too ?

Posted on Jul 10, 2014

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Posted on Jan 02, 2017

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1993 waverunner bogging down on take off. New rebuilt carb, will low oil level cause this? Is there a low level switch /?


Only of you have ran the engine out of oil...Sounds like the carbs may not be set correctly.. .Did a professional do the rebuild?..What exactly was "rebuilt".. were any parts replaced?
Sounds like the low speed (pilot jets/air screw passages may not be clean as they need to be??)
Please check the compression on each cylinder..remove the spark plugs... hold the throttle (carbs) wide open when you check this.. spin the motor for 5-8 seconds... you should get 120psi. minimum..(and less than 10psi difference).. if less, it might be time to actually rebuild the top end..(new pistons/rings/hone cyl.).. only bore it if absolutely necessary.. get it measured..

There are only 3 parts in a two-cycle carb that ever need to be replaced,,(unless they are actually broken) The needle and seat assy., the jet needle and the needle jet. ..see pic... parts # 41 = needle and seat assy. #6 = jet needle, #37 = needle jet.

tm_flatslide_expl-bzhe2oey0b0e11an1gziaszn-4-0.gif

The needle and seat regulate the flow of gas into the carb as the floats rise and fall..,, if they are damaged or leaking the carb will overflow with gas., the needle jet is a orifice with a specific size..The jet needle has a specific size, taper, and length..== The jet needle and needle jet work in unison to regulate the flow of gas from right off idle all the way to WFO..the needle jet/jet needle WILL wear over time causing the fuel/air mixture to become richer and richer and start fouling spark plugs..(this is more pronounced on 4-cycle ATV's)...
I hope this has shed some light on your carb situation...
Good luck...
exploded view of mikuni carb Google Search

Jul 10, 2017 | Yamaha Waverunner Xl 800 / Xlt 1200 Jet...

1 Answer

I have a 1986 Suzuki dt40 will not get on plain rebuilt carb perform a sea foam shock seems better after that but also the lower plug was warm not hot and the primer bulb seems soft when running


Sounds like the carb(s) need a qualified professional cleaning and setting...The bulb should stay tight..
.. the lower cylinder was not = 1. Firing.. or 2. Not getting fuel..
.. I would replace both spark plugs,,,( NGK BR8HS Spark Plug ).. after getting the carbs professionally cleaned and set..

Jul 03, 2017 | Boating

1 Answer

18.5 briggs intek vtwin only runs choke on only


Make sure the fuel jet is clean. Its easy to miss when cleaning the carb. Ive seen a lot of dirty fuel jets that once I clean them out run like new after.

Sep 25, 2014 | Garden

1 Answer

Help husqvarna 372 chainsaw will not run


check with a husq.dealer,they had some crummy carbs that may need replaced not rebuilt

Mar 06, 2014 | Husqvarna Garden

1 Answer

My Craftsman 17cc gas weed trimmer wouldn't start.


Hi There, Check the primer bulb for tare or pin holes. Replace it. Check and clean carb jet it maybe plugged with debree. Also check for spark which you didn't say. Replace with correct plug.
Note; Do not use strong cleaners on rubber seals (O rings and gaskets) They dry up and crack.
If needed use a dabble of grease on seals

Jun 13, 2011 | Craftsman Garden

1 Answer

Hi (.honda cb 400-4) float posts damaged on original carbs.so replacements stripped & cleaned out i also fitted new jets adjusted float heights.to 21mm or 22mm (miss informed by a haynes manual).valve...


Were the jets the same size? Just because the numbers were the same does not assure you that someone has not used a jet drill to enlarge them. Pull the low speed jets and compare them with the old ones, using a wire gauge or set of number drills.

Apr 02, 2010 | 1975 Honda Cb 400 F

1 Answer

No power fs66 stihl weedeater


Hi When you cleaned the muffler out did you also clean the carbon out of the port on the cylinder as this can be blocked as well. Also you will have to retune the carby, There should be 2 screws 1 for low speed marked l on the carby body and 1 marked h for high speed to start with they should be set at 1 & 1/2 turns out from closed the low speed you set at an idle and the high speed you set at full throttle. Hope this helps.

Aug 03, 2009 | Garden

1 Answer

Hard starting,poor runnig at low speed


Ok good that you have fresh fuel at all times :)
I would be having the carburettors dismantled and cleaned and a carb overhaul kit installed when you can. Carbs have low speed idle settings and high speed jets. Often these passages get blocked up woth gum or other foreign accumulations and cause running problems and fuel delivery issues.

Mar 16, 2009 | Bass Pro Boating

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