pvc hose,4800 @ 77mph

[gero1]

where does the pvc hose hook to on a black hawk? mine is laying on top of the valve cover not hooked to anything. also with the tabs all the way up and some trim could only 4800 rpm at around 77 mph on the speedo and no rooster tail, any more trim and it sounds like its cavatateing :confused:

[Greg Maier]

Can you send a picture of the PVC hose? I'm not sure what you are talking about.

77 mph is almost the top end, especially if you are in freshwater. The roostertail is much larger at 60-65 mph than it is at 80 mph. At 80 mph, the transom is tucked way down in the water and there is very little roostertail.

[gero1]

lose speedo at 75-77 kinda like its getting air in it or back of boat is out of the water, it starts going from 20 to 80, just kinda all over. the hose i am talking about runs along the top of the driver side valve cover and then turns up under the air cleaner but is not attached to anything. not able to send a pic as i do not know how yet. thanks

[Bad-Tat]

Gero,
PCV hose on mine wasn't connected to anything either. Left side ran over to the right side vent on the rocker cover, then a short hose pointing at the air intake. As long as it's close enough for the fumes to get sucked in the intake it's ok, at least that's the way they are stock.
My speedo did the same thing so scrapped it and put in a GPS speedo. Problem solved. You should be getting more than 4700 if the boat is up and flying. Mine will pull 5100. I never trim out the drive, just leave it straight and down and play with the tabs.

[gero1]

is that leaveing the drive all the way down? do i still still get lessons at aoth??? thanks tat robert

[Bad-Tat]

Class at 0900 21 May 04.

[gero1]

just got home, been a long week but will be there for training!!!!!!!!

[Cuda]

Check to see if the hose is attached to the fuel pump on the other end. It is most likely the hose that prevents the bilge being filled with gas in the event the diaphram fails in the pump.