papster Posted September 24, 2015 Share Posted September 24, 2015 Hi I am having some problems with the idle of my PAP ROS 125 I am fairly good with engines but not used to dealing with these delicately tuned 2 strokes. Does anyone know of a good repair service ? I live in Hereford but happy to travel if I can find a good mechanic. Idle got progressively worse the motor will start and run when first primed will rev fine from about 3000 RPM. If let go back to idle struggle to pick up again unless super light on the throttle. If left alone will just eventually slow and cut out. If I open the mixture screw it will run at a higher idle but a little two high and I am sure will effect the overall performance and mixture if left at this high mixture setting? I have fitted a carb rebuild kit for the Walbro WG8 cleaned carb not that it was really dirty the motor has done very few hours. Regards Papster Quote Link to comment Share on other sites More sharing options...
Guest Posted September 24, 2015 Share Posted September 24, 2015 My money is on the pop off pressure Anyone coming to the fly-in who can help out and adjust this / take a look? SW Quote Link to comment Share on other sites More sharing options...
paulg18 Posted September 24, 2015 Share Posted September 24, 2015 I also have the Walbro WG8 carb and recently stripped and cleaned it fitting all new parts from the service kit. On testing it afterwards it was running very lean and hot and would briefly stall when going from idle to full throttle. The new metering lever in the kit comes preset to a height of 1.7 mm which Walbro will tell you is the correct height, however there are a few forums online which say otherwise and I think it very much depends on the engine to which it is fitted. After some experimentation I found that mine runs best at a height of just 0.75 mm, thus the greater the gap the leaner it will run and vice versa. Hope this is of some help. Quote Link to comment Share on other sites More sharing options...
spigot Posted September 24, 2015 Share Posted September 24, 2015 Simon, my pop off meter is in your garage. Throw it in the van and I'll make use of it over the weekend Quote Link to comment Share on other sites More sharing options...
Guest Posted September 24, 2015 Share Posted September 24, 2015 Hummm, I beg to differ mate? Its not in any of the standard places dude. SW Quote Link to comment Share on other sites More sharing options...
papster Posted September 24, 2015 Author Share Posted September 24, 2015 Thank you all for the advice will come along on the weekend hopefully we can sort it. The royal we that is Quote Link to comment Share on other sites More sharing options...
Neilzy Posted September 24, 2015 Share Posted September 24, 2015 I am bringing my pop meter and the Walbro needle height gauge Quote Link to comment Share on other sites More sharing options...
morgy Posted October 13, 2015 Share Posted October 13, 2015 Speak with Daniel kettle from fly PAP uk Quote Link to comment Share on other sites More sharing options...
Guest Posted October 14, 2015 Share Posted October 14, 2015 This was sorted at the fly-in (I think?) SW Quote Link to comment Share on other sites More sharing options...
Neilzy Posted October 14, 2015 Share Posted October 14, 2015 Yep all sorted Quote Link to comment Share on other sites More sharing options...
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