G
Guest
Guest
Hi y'all!
The saga continues.
This morning I had to drive to see a client - about 20 miles so I stuck
the LC on petrol mode fired her up and of I went. No trouble at all,
drove like a dream! Switched back to LPG, had the usual slight power
drop (normal with LPG vs petrol and it drove fine. Back onto petrol,
100% AOK. Whatever I did I could not recreate the problem.
Got to client, did job, stated to drive back. Again 100% AOK untill I
got stuck in standing traffic when it started running rough again. Not
as bad but similar, again fine on LPG. Got home and parked up, left
engine running on petrol and checked under the bonnet. It's idling
OK'ish - a little rough but nowhere near as bad as it has been. No sign
of the plunger thingy rising and falling - it's stationary.
I've also found out a little more about this plunger thing. The
'adjuster screw' that it abuts is an adjuster screw but the metal
bracket that said screw sits in is actually a throttle lever. I never
thought to se if it moved last night but it does; if you rotate the
lever away from the plunger it opens the throttle on the same cam as the
hand throttle inside the cab uses. So, it seems that said plunger thing
is supposed to open the throttle when it moves upwards but it never gets
far enough to do that. Still don't know what makes the plunger move though.
All the vac hoses seem OK although I haven't had a chance to properly
test them all yet.
Anyway, to summarise:
It was fine this morning and for a 20 mile drive plus 3/4 of the return
journey.
It then ran rough again but not as bad as before
The plunger is no longer cycling in / out and niether is the engine
roughness cycling.
So, Brendan Lalleys earlier post about the intermittent nature of this
problem was prophetic in a way!!
I'll keep you informed but any further hints, especially about the
nature of the plunger thing I'd appreciate it.
Pete
The saga continues.
This morning I had to drive to see a client - about 20 miles so I stuck
the LC on petrol mode fired her up and of I went. No trouble at all,
drove like a dream! Switched back to LPG, had the usual slight power
drop (normal with LPG vs petrol and it drove fine. Back onto petrol,
100% AOK. Whatever I did I could not recreate the problem.
Got to client, did job, stated to drive back. Again 100% AOK untill I
got stuck in standing traffic when it started running rough again. Not
as bad but similar, again fine on LPG. Got home and parked up, left
engine running on petrol and checked under the bonnet. It's idling
OK'ish - a little rough but nowhere near as bad as it has been. No sign
of the plunger thingy rising and falling - it's stationary.
I've also found out a little more about this plunger thing. The
'adjuster screw' that it abuts is an adjuster screw but the metal
bracket that said screw sits in is actually a throttle lever. I never
thought to se if it moved last night but it does; if you rotate the
lever away from the plunger it opens the throttle on the same cam as the
hand throttle inside the cab uses. So, it seems that said plunger thing
is supposed to open the throttle when it moves upwards but it never gets
far enough to do that. Still don't know what makes the plunger move though.
All the vac hoses seem OK although I haven't had a chance to properly
test them all yet.
Anyway, to summarise:
It was fine this morning and for a 20 mile drive plus 3/4 of the return
journey.
It then ran rough again but not as bad as before
The plunger is no longer cycling in / out and niether is the engine
roughness cycling.
So, Brendan Lalleys earlier post about the intermittent nature of this
problem was prophetic in a way!!
I'll keep you informed but any further hints, especially about the
nature of the plunger thing I'd appreciate it.
Pete