[MagicalTux]

Do you have Yamaha engine problems? Share it on the Outboard Forum! Whether you are looking advice on an outboard motor or a difficult marine electrical or electronics technical problem then post your story or message here! UPLOAD AN IMAGE OF YOUR PROBLEM EQUIPMENT! Give us a detailed description, short 5 word posts are not much use and will not be posted. Put your boat info, outboard make and model or basic detail in the post title.  Great outboard boat motors and Yamaha outboard information. More useful information at fishing and boats.

[julia6roberts]

The Forum is also a great place to look for spare parts that are hard to find, share your problems and experience with others, ask questions, share stories and more about my books and related topics and a lot more. Create your own web page every time you submit an article and include great low resolution images as well.  here

[BeeCee1]

Yamaha outboard engine problems and issues? need someone to try and help resolve them? Then use this forum and maybe someone can help.

[Sidewalker]

From outboard engine and electrical and electronics systems to engine and alarm issues, tilt and trim issues, this is the place to find information.

[TarotUnlimited]

3. To post to the Outboard Forum please at least use a first name and location with your email address in the notification page, so you will get a message when someone leaves a comment. [links]

[kathlemith24]

So where do you start? There is a lot to know. I get asked regularly about what is the problem, and more importantly and how to fix a problem. I am a boat owner and that’s why I have published a dozen books to tell you all that you need to know about how to take care of your boats and systems.

[nanaimogold]

Confirmed running spark on all 6 cylinders. When injector connectors or spark plug boots are pulled on cylinders 1,2 & 3, there is no change in the poor running condition. When 4,5 & 6 are pulled the engine stalls. Timing shows 4 btdc in neutral and TDC in gear at idle on YDS. No codes [links]

[chasekennedy63]

Spark plug boots, coils, pulser coil, o2 sensor, injectors, tps (set to 61) all ohm to spec. Shift position checked out. Swapped injector 2 with 5. Same running results I unplug injectors or boots on 1,2 or 3. No corrosion on any connection or grounds.

[i5Steve]

2000, HPDI, 200HP, 535 Hours. Just completed a rebuild, compression 120. ALL fuel filters are new. High pressure pump was sent out last year for service. Injectors too. more

[komoto]

UPDATED ABRIDGED VERSION FROM PREVIOUS POST. PLEASE HELP.

[telyni]

Symptoms: rough idle, slow throttle response, misfire/backfire, puff of blue smoke emits from exhaust in sync with misfire. White smoke when I rev it up. Found the upper LPFP was leaking. Replaced it. Still have white smoke. I did not have these symptoms prior to the rebuild. Engine is being run in a test tank in gear using the harness, oil tank, ignition switch & gauges. here

[skull88]

Outboard Spares Response
Hi, Around that ERA they moved to a CDM Module assembly on each cylinder instead of a traditional coil. These were/are prone to failing as they age. If it is this type, you could swap the CDM Modules around (move the middle to the bottom and bottom to the middle) and see if you start getting spark on the bottom plug that you were not previously. If the spark does follow the middle CDM then you'll know you have a faulty CDM. The same can be done if you just have standard coils fitted. To me it sounds like this is the issue (coil breaking down under load) given the upper two plugs look like they are firing and the bottom appears like it's not. Good Luck. here

[morize]

Hi..i have a 86 bayliner capri my first boat 17ft 2 strokes outboard motor it's a 85 force . now Now I go to turn on my battery big red switch to 1 ..2..and all. and my starter come on just like that without I using the ignition switch..what can cause that to happen more

[Grant]

I bought this motor recently and it will just not start,I have checked compression which is 150 psi each cyl and the spark test shows spark to each cyl. I have now tested the choke valve and notice it does not activate (checked Solenoid as OK ). I checked the fuel filter and carbys which have fuel. I suspect controller fault,can you advise please (motor cranks well with good battery ) more

[happyrock]

had a couple of months of perfect running then last Saturday whilst heading back at the end of days fishing travelling at around 16 knots engine just died stopped dead. checked fuel ok tried re starting and it started but very weak and only ran for 5-10 seconds then cut out this kept going on for an hour or so - on some starts i was able to put it into gear but it would shut down immediately - finally gave up and had to get towed at home have tried and same deal its starts strong but will only idle for seconds and then dies any thought? many thanks in advance alf [links]

[Cab1945]

Outboard Spares Response
Hi, to answer your question, I don't think so. You could try changing over the battery and seeing if this fixes anything but I'd say it's unlikely. I'd be now looking at the following. 1) Check all linkages between the throttle, carburetor and timer base. Make sure that all linkages are activating as they should and that none of the plastic end fittings on the small control rods are cracked or broken. 2) Check if the temperature sender in the cylinder head connects to the power-pack. If it does, disconnect it and see if the engine now runs properly. If it does, your engine either has an overheating issue (faulty thermostat, waterpump, blocked head, etc) OR a faulty temp sender. 3) Check stator output. Ensure stator voltage output is between 150 and 400 Volts. You will need a DVA meter for this. See how you go with this. Cheers

[x69to005]

If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. more

[ribuck]

If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware.

[nviera174]

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[Zenchess]

Another way to prevent getting this page in the future is to use Privacy Pass. You may need to download version 2.0 now from the Chrome Web Store.

[The Madhatter]

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