Thule 686 Atlantis 1600 Cartop Carriers - Page 9 - Answered Questions & Fixed issues

Engine timing? Or carbs in need of balance?

Blocked muffler will cause extreme reduction in power. When you say red hot, do you mean it glows red or it is very hot and you will burn your hand on it? The latter is normal, you cannot touch an exhaust system within a minute of running. Cherry red sounds abnormal. Engines putting out maximum power can have glowing manifolds but not average power. Make sure the timing is correct and do not use gasoline with an octane rating that is too high. Higher octane fuel burns slower. If it is still burning when the exhaust valve opens, it will continue to burn in the manifold. Use the gasoline recommended in the owners manual.

Find the serial number and look it up on line or find a website for Yamaha enthusiasts and they will be able to help you with just about all you need and want to know about it.

Oil does not go directly into the Crank, I am afraid you have (Dirty Carb) or Low Compression. What it sounds like is you HYDRO LOCKED your CYLINDER (not completely) and when you started it, it can not compress a liquid and BAM,,..,, Time for a new engine

The Oil Injection runs off a Pump on the Bottom of the engine and if I remember correctly... There is a Cable that runs off the Throttle and you can adjust it there. I have always been a fan of adding Oil to the Fuel Directly. I have replaced way too many engines due to Oil Starvation so as an added precaution, I still pre-mix my Fuel/Oil but the Ratio is not a complete 40-50/1. More like a 100-125/1. Do I ever foul out a plug? I DO... have I ever Oil Starved an Engine... NEVER... 2 Spark Plugs last me an entire season but I replace them at the Beginning of the season.... I would STRONGLY RECOMMEND cleaning the Hose that comes from the tank....

Time to rebuild most likely cooked internals but its easy just take your time disassembling to remember the assembly and a friend at a machine shop helps or a hone or equivalent

Hi there, From RackAttack's site. Good luck. http://www.rackattack.com/product-pages/product-pdf/thule-571-roof-box-storage-lift-instructions.pdf

The voltage regulator shunts excessive voltage to ground. Somewhere you have a bad ground connection.

it sounds like it is still you needle and seats are worn or your float has a hole in it just check the float and see if it has fuel inside it ,but i say a new set of needle and seats and bowl gaskets cheers

First make sure you have brake pads left! If you do you may need to bleed the caliper or have the brake assembly onthe handle bar cleaned. Very common problem.

It is possible to flood the crankcase on a 2 stroke engine this will cause the plugs to saturate and the engine will not start. disconnect the fuel lines, remove the plugs, have a fire extinguisher close by attach the plugs to the caps and place them in the plug hole but do not screw then in, crank it over live and if the base is flooded the engine will spit fire from the plug holes do it until the engine is dry and then attempt to start it without the fuel lines connected and let it run until it stops. Reconnect the lines and see if it runs. If the float bowl has a bad float it will not shut off fuel to the bowl and flood the engine everytime.

Incorrect temp range spark plug is one suggestion, check the exact plug type, oil injection adding to much oil, (has it been changed) cheap 2 stroke injection oil, buy good oil. has anyone fiddled with the carbs, ar they Mikuni cards

Is it running on both cylinders or just one, if it's out on one cylinder, clean the carbs and replace the plugs and wires, wires are already bad on my 2009 gtx 550, so I just taped them with electrical tape as a temporary measure.

have you checked the plugs? they could be fouled or a build up of carbon. have you checked or rebuilt the carb, if so did you change the fuel lines they could be cracked and sucking air.

If your plugs are fouling the plug is not the problem. your carburetor setting are to rich. secondly if you run a hotter plug it will help stop the problem. another thing I found out was that the helps is to let off the choke as soon as possible. running with choke on to long only fouls plugs

It sounds like a grounding problem

You may have the wrong belt or the clutches may need some attn.

Your being too picky.Snug them down by hand.LOL

Most will.

Make sure the plug going intd the engine is not corroded. this is a ground system. ant the power is not finding it.