Very high long term offset

[davelittlewood]

Have a look the screen shots gents.

The long term offset on the even bank is at -98%!!



Is this normal??

[davelittlewood]

The even bank is much worse than the odd.
Could this be a leaking injector?

I'll get the thermometer gun out later and check the manifold temps.

[davelittlewood]

Checked the vacuum pipe for the fuel pressure valve. All OK

We're off on a run for the weekend. I'll see what it looks like when I get back

[davelittlewood]

Gents,
thanks for all the help.

The screen shot was taken with the engine NOT running.

I'll check it again with the engine running and report back.

[davelittlewood]

Well this is a bit weird




This is running but not warmed up yet.

Now it's the odd bank that's high

Eventually after it warmed up



Is it strange that the even bank was at -98% and now it's the odd bank?

[davelittlewood]

blitzracing said:

That was a RoverGauge bug thats now been sorted.

Cheers, I thought it might be some thing like that!

[davelittlewood]

But are these offsets anything to worry about?

[davelittlewood]

Cheers Alun,

I'm getting a new vac unit on Saturday from TVRPower so let's see if that makes any difference.

I always said that as soon as anything expensive packs up on either the ignition or the fuel injection then the whole lot goes in the bin and I'll take it to TVRPower for an MBE.

Talking of MBE systems, have they mapped your properly yet??

Should have given them half the money for half the job!

[davelittlewood]

I thought that might be the case so I'll fit the new vac unit, check the timing, give it a week and see how it goes.

[davelittlewood]

Vac unit was definitely knackered, I can almost breath through it!

Fitted the new one this afternoon.

30mph in 5th gear now with minimal shunting.

I'll rip the old one apart for some photos

Edited by davelittlewood on Saturday 29th August 22:05

[davelittlewood]

The vac unit is on the side of the dizzy, connected by a pipe to the port just down stream of the throttle butterfly valve in the plenum neck.

Looks like this:



2 minutes with a dremmel and



There are two diaphragms in there.

The outer diaphragm from the dizzy wasn't in bad shape with only 1 hole but the inner was rather crispy and has lots of holes. The two weren't stuck together round the edge so I guess that the air was just going straight through it.