PHP Warning: Use of undefined constant VBA_SCRIPT - assumed 'VBA_SCRIPT' (this will throw an Error in a future version of PHP) in ..../includes/functions_navigation.php(802) : eval()'d code on line 1 Parsun Outboard Motors. - Page 4
Doesn't sound like the dealer is giving you very good advice mate.
Flushing is bad? Thats nonsense.
Can't troll with it? Can with any other 2 stroke.
I'd start with the basics.
A compression test to ensure nothing oddball has occured.
A spark check. Also how does the plug look?
A linkage check. Carby/s closing at idle and opening fully at WOT
A fuel check. Tank good? Line good?? primer good? Connectors good?
Are you using choke to start it when warm? if so this will flood it.
Did these changes occur IMMEDIATELY after the service. ie: is the service most likely to blame (as in an adjustment made thats put it out a little).
If I were in your neck of the woods I would have a look at it for you but I'm a tad to far south I think. Perhaps get Spaniard King or another mech to have a look at it (on water).
If you have to go down the consumer affairs/fair trading track, you will need independant information from another mechanic to verify the issues.
Video footage of the problem is also invaluable.
Of course, peaceful resolution with the dealer is the best outcome.
I will take it to another mechanic to get a general diagnosis for peace of mind. Yes the changes did occur directly after the 10hr service, I do flush the motor after every use although the use of the muffs is apparently a "no no" and "I am better off the get a tank"
Never use the choke when warm, it starts pretty much fine on most occasions but will start briefly then splutter and die on others, these occasions are when the 10 -15 pulls come in.
I am adamant of the missing issue, when I flushed it on the muffs last time it missed and backfired in the driveway, I made the dealer aware of this although he couldn't explain it?
Backfiring is often a timing issue but outboard timing once set usually never needs touching.
Also leaning out the mixture can cause backfiring.
How regularly does it miss on idle on the muffs? Muffs are fine by the way. The entire world use muffs for flushing although some do use a tank. Either way is fine.
I'd say the carby/s want checking and the mixtures reset. And a look at the ignition system.
Getting the brush off is not good. Dealer should be looking after you better than that. Perhaps he doesn't know how to fix them??
To me it misses and shakes quite regularly at idle, it backfired at 1/4 throttle on the muffs, quite a loud bang and a nice grey ring of smoke from the prop.
It might just be a mixture issue, I know the carby has been checked for water and fuel tank and lines also with the all clear being given.
I'll look into this a bit smarter now and won't back down as I have concerns, its a shame as I loved and trusted the motor 100% before this and now I'm not too keen to venture too far from safety so to speak.
I may not know alot about outboards and certainly don't claim to, I have however owned quite a few boats along with Yamaha, Mercury, Mariner and now Parsun outboards, and have never had issues with any of them like this one
the problem with the 10 hour service is u should be running 50-1 not the 25-1 for running the engine so when u get the 10 hour service done the engine is tuned to suit the 50-1 fuel that will be used there after your problem might be your engine was tuned to 25-1 now your running it at 50-1 and its lean
A shaking motor (if not ignition related) can be an overly rich mixture (just to further confuse the issue)!!
Throw a timing light on one cylinder at a time and see if you can see the miss from the flash of the light. You can also remove plug leads one at a time (with insulated grippers) to see if you have a cylinder that's not contributing as much as the other.
Check the plugs for gap and cleanliness and check their output by grounding the plug against the engine block and pulling the starter cord. Nice fat blue spark is what u want.
Find out the basic setting for the carb and adjust accordingly. Probably between 1 and 1.5 turns out from lightly seated.
Video the problem on your phone or camcorder and show it to the mechanic. Csnnot argue with what he sees shown to him.
Anythings possible I suppose Gazza. Sounds odd. Tohatsu may have some procedure though. Or perhaps that's simply what the mechanic said after the 10th service?
Assuming ignition was all in order it was probably running too rich. That will give you a rough, head shaky idle. Leaning if off a tad will smoothen up the idle.
Reply With Quote
