Have 2003 200 HPDI seems to stumble and miss in the 900 to 1200 rpm range .More noticable when first heading out.Improves after running at higher rpm for a while.All filters changed VST tank recently serviced and all sensors checked with voltmeter and ohmeter were in specs.o2sensor and shuttle also removed and cleaned.Fuel pump pressure at vst tank also in specs.Runs good at mid range and high rpm.the only sensor i didnt check was o2.Afraid to put a torch to it.has anybody experienced a similar problem i am leaning toward a o2 sensor.Figured i ask before spending 275 on o2 sensor.Also use ringfree and gas is fresh since i just replaced tank.Is this a common characteristic of this engine or am i being to fussy.Any help greatly appreciated.THANKS.Still a great motor.
Question about 200 HPDI
- Thread starter Hardways
- Start date
It is not a common characteristic, it should run well at alll rpms. I would check the O2 sensor. There is a procedure online for it, do a Google search. If you follow the procedure you will not hurt your O2 sensor.
wahoo33417
GreatGrady Captain
- Joined
- Feb 28, 2005
- Messages
- 1,233
- Reaction score
- 240
- Points
- 63
- Location
- West Palm Beach, FL
- Model
- Sailfish
I believe the HPDIs drop two cylinders in the low rpm range to meet emissions standards. Made idle speed fairly rough, but I was told that was normal. But mine would smooth out around 800 rpm. Could it be that your two cylinders are kicking in a bit later than they should?
THAT MOTOR RUNS ON 4 CLY UNTIL U PUT IT IN GEAR THEN RUNS ON ALL 6 . SOUNDS LIKE MOTOR NEEDS TO BE SETUP.(SYNC @ LINK) WILL MAKE MOTOR PURR WHEN SETUP IS DONE.