v8 3.5 lpg how to adjust tickover

[mikeh1975]

hi

just serviced the disco, but now its serviced the tickover seems to gave gone up, its now about 1500 rpm.where before it was just below 1000 rpm, it runs from startup on lpg, an i replaced the old plugs with ngk ones, can someone please talk me through how to adjust it back down

thanks

[gtomo2]

is it efi model if so check the rubber pipe at the back of the pentuim chamber is still conneted mine had come off and the revs were all over the place. also found out the screw on the air intake by the throtle linkage should be screwed all the way down as the ecu controls the idle revs. if its carb sorry dont know

[thermidorthelobster]

If it's SU carbs then there are screws which control the travel of the throttle on each carb.  However, you also need to make sure the linkage is the right length for each carb.  There are no doubt better ways of doing this, but I'd disconnect the linkage, adjust the idle speed on each carb separately to balance them as best you can, then reconnect the linkage;  then you need to take off the air intakes, stick a bit of tube in each one in exactly the same place, hold it up to your ear, and make sure you've got the same amount of air travelling through each one at various different revs...  Sounds fiddly but actually it's not as bad as it sounds!

[mikeh1975]

yes mine has twin su carbs, not the posh efi , i`ll give it a try later on today and let you know how i got on

thanks

mike

[hairyasswelder]

it runs from startup on lpg,

Which are you setting? Running on petrol or gas as they are 2 seperate systems.

Steve