2.25 petrol rough idle
- Thread starter styleruk
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styleruk
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Thought I'd come back to this chat. Planning a loooong trip for 2026, so between now and then I will need to solve this tickover issue, otherwise, I'm just gonna swap the engine out or do something radical like fit a V8 and be done with it.
After I've got my classic car off the ramp and stripped my motorbike, I'll have a couple of weekends spare to put the LR back on the lift. I've listened to the people talking about vacuum leaks and can't find any in the servo or pipes, however, what's to say the inlet manifold is not sealed properly. So maybe, just maybe I'll take the inlet manifold off next and make sure there's not a leak there somehow.
Would a leak at inlet cause this kind of running?
(Sorry, I'm hear until it's fixed)
After I've got my classic car off the ramp and stripped my motorbike, I'll have a couple of weekends spare to put the LR back on the lift. I've listened to the people talking about vacuum leaks and can't find any in the servo or pipes, however, what's to say the inlet manifold is not sealed properly. So maybe, just maybe I'll take the inlet manifold off next and make sure there's not a leak there somehow.
Would a leak at inlet cause this kind of running?
(Sorry, I'm hear until it's fixed)
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- 46,662
- Location
- East Dorset
You could try spraying some brake cleaner or easystart around the edges of the inlet manifold to see if the revs change, i.e. go up at a certain point.
Quicker and easier, maybe than taking the manifold off.
styleruk
Active Member
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Yes, probably try that first. Tentatively spray brake cleaner near the hot manifold stuff. Never done that before, I'm assuming a tiny amount and listen for lifts
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- 46,662
- Location
- East Dorset
Not too tiny!
And just make sure none goes in the air filter!!
But yes, if any of the highly volatile product gets into the cylinder(s) you can expect the revs to pick up a bit.
styleruk
Active Member
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only time I've done that is when I ran out of juice in my mercedes motorhome, was stuck in the middle of nowhere with a single can of diesel, so I sprayed brake cleaner directly into the intake as my wife cranked it. Man it revved high and scared the crap out of me...good stuff that, got me the 5miles to a station.
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- 46,662
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- East Dorset
And leaves me wondering why you hadn't put 5 miles worth of diesel in the tank before that!
But good for you!!
A while back there was a time when you couldn't get diesel easily, even on Autoroutes, due to a tanker drivers strike or summat. so filled two jerrycans and topped up when I could. (We were driving the 550 miles to our place. ) Got so bogged down trying to do mental arithmetic to see whether we could make it without refuelling that I missed a turning off the autoroute and ended up nearly in Chartres.
Still made it though.
They say that when 2cvs came out old farmers used to drive around with an empty beer bottle to put petrol in if they ever ran out.
styleruk
Active Member
- Posts
- 150
To explain, it was showing 1/4 tank still when it ran out, probably a blockage, but at the time I thought the gauge failed and I was empty. A good service after revealed no issues. Suffice to say, we never let it get near 1/4 tank any more....in case. But I do have 2 cans of easy start in a box under a seat in case.And leaves me wondering why you hadn't put 5 miles worth of diesel in the tank before that!
But good for you!!
A while back there was a time when you couldn't get diesel easily, even on Autoroutes, due to a tanker drivers strike or summat. so filled two jerrycans and topped up when I could. (We were driving the 550 miles to our place. ) Got so bogged down trying to do mental arithmetic to see whether we could make it without refuelling that I missed a turning off the autoroute and ended up nearly in Chartres.
Still made it though.
They say that when 2cvs came out old farmers used to drive around with an empty beer bottle to put petrol in if they ever ran out.
