Thanks for the suggestions Ben.
Regarding #1, the fuel pump is pretty low on the TR4 block, and I believe the
level of the inlet is almost always below the fuel level in the tank. I've had
problems with a nearly full tank. I would expect to see some fuel leakage if
there was a cracked rubber hose, but I'll try putting in all new hoses when I
drain the system.
Regarding #2, I swapped out the pump with a good spare that I had on the shelf,
with no effect whatsoever.
Regarding recovery time, a few moments is probably more accurate. It recovers
immediately if I back off the throttle. It takes longer if I the push on, for
example to continue up the hill.
Dean
---- Ben Zwissler <bjzwissler@gmail.com> wrote:
> OK, two more suggestions. Both based on the fact you get this problem
> only going uphill.
>
> Suggestion 1. Going back to 1979, there's a parking lot outside our
> dorm that has a slight grade (nose up). Roommate's car won't start when
> parked in that position. Starts and runs fine anywhere else. Plymouth
> coupe with tank mounted under trunk. With nose up fuel level is below
> fuel pump inlet. There's a crack in the rubber hose at the fuel pump
> inlet. When fuel level is below pump inlet, pump draws air rather than
> fuel. Replace hose and problem solved.
>
> Suggestion 2. Similar issue, but problem is in fuel pump. Leaking
> one-way valve on inlet behaves like cracked fuel line. Same issue if
> there's crack in the diaphragm. Solution, replace or rebuild fuel pump
> or try an in-line electric pump. Crack in diaphragm can also cause some
> fuel to go to crankcase so adding an electric pump when you have a
> cracked diaphragm will push more fuel into the crankcase. Watch for
> rising oil levels...
>
> Does it really take a minute or two to recover? That seem likes a long
> time for a fuel supply problem, starts to sound like something else again.
>
> Ben......
>
> Ben Zwissler
> bjzwissler@gmail.com
> Columbus, IN
> 1966 Triumph TR4A
> 1973 MG Midget
> 1980 Triumph TR8
> 2007 Mazda RX8
> 2002 Yamaha FZ1
> 2003 Honda ST1300
_______________________________________________
Triumphs@autox.team.net
Donate: http://www.team.net/donate.html
Suggested annual donation $11.47
Archive: http://www.team.net/archive
Forums: http://www.team.net/forums
|