Join Date: Dec 2016
Location: The Netherlands
Mentioned: 2 Post(s)
Quoted: 80 Post(s)
Dzien dobry (if I guess right :-) ) Marcin,
Is this a recent problem? Did it run fine before? What -if any- changes or modifications did you make to the engine?
Does it ALWAYS do this or occasionally?
No expert, but it can only be 3 things... air, fuel or electricity :-)
What I would do is:
check the airfilters if they are clean or clogged
check the wiring and connectors between altenator, voltage regulator, starting realy and battery. for burning marks or loose connectors.
Measure the AC output (over the 3 wires) with the engine cold and the engine hot. altenatoros that are partly broken will produce less once the lot it hot.
Load trst your battery, chech the DC output from your voltage regulator.
Relatively new to the SP, but owned a VFR for 19 years....
Old enough to know better, young enough not to care.