Quote:
Originally Posted by bilgepump  Hello all, I am new to this forum, but not new to mechanical stuff.
I have a 2002 Virage I which once started runs pretty good.
But it takes at least 20 minutes to start. She fires right up but shuts right down. Once she does start and keep running,
I can get out the canal and once I run at 3-4 grand for a couple of minutes she runs fine at idle. This sounds like a fuel problem, but not sure where to start. Thanks in advance for all and any help.
Thanks Phil |
It could be heat related, or it could be as simple as a faulty TPS (Throttle Position Sensor).
Unplug the TPS (located at the rear of the throttle body). Does it now start and idle properly?
If it does, then replace the TPS with a new TPS (not used).
If unplugging the TPS does not help with the start/idle, then something needs to warm up before it works properly. Most likely candidates are the EMM itself, or the electrical stator inside the flywheel.
Do you have access to an EMM from another Virage i?
If yes, install it temporarily, and see if the problem goes away. Do not run it hard like this, just do the necessary testing.
If you do not have another EMM to swap in, then you can do further diagnostics.
Polaris PWC Knowledge
Polaris Ficht Fuel Injected Engines
Do you ever see a warning message on the display (Check Engine)?
Check the fuel pressure at the Schrader valve when cranking/starting the engine. It should jump to over 20PSI as soon as the engine starts cranking, and stay there until the engine is shut down. The fuel pump is electric, but the pressure regulator inside the pump is mechanical.
If fuel pressure is good, check the voltage on the White/Red wires. Keep both injectors plugged in, and tap your volt meter probe into the White/Red wires somewhere.
Voltage on White/Red should jump to over 20 volts as soon as the engine starts cranking, then jump again to 40+ volts as soon as it actually starts. The voltage should then be fairly stable at around 45 volts as RPM varies.
When the engine shuts down, the White/Red wire voltage should
slowly subside over several seconds.
The EMM needs the 40+ volts to properly fire the injectors.
If the injector voltage is low, then either the EMM or the stator is bad. Usually it is the EMM.
You can check the stator coils for correct ohms and AC voltage. If that checks out, then it is likely the EMM. You can send it in for
diagnosis and repair.
Side note: If the starter solenoid is black in color, you should replace it with the newer brown color version, The black bodied solenoids can fail at any time, and leave you stranded on the water. Sometimes they short internally, and crank the engine continually until either the battery or the starter/Bendix fails.
Linear Mode
