bluespanner Posted September 10, 2009 Share Posted September 10, 2009 I have just got home having come 9 miles, flat out in 3rd. (at 35mph). I didnt expect it to be 100% as the vehicle (90 with ex rangie 3.5 on strombergs with a points dizzy) has been laid up for some time. Now what gets me is the engine is only luke warm after 9 miles of flat out driving? Am I right in thinking this may be caused by drastic overfuelling? (lean = hot running, so rich = cool running?) And when I say the engine isnt hot, i mean the rad, all hoses, the block, oil filter etc etc. What on earth is going on?! Yours, ears ringing, Roland Quote Link to comment Share on other sites More sharing options...
ThreeSheds Posted September 10, 2009 Share Posted September 10, 2009 Boy this is going to be interesting - I am going to watch this one since I have NO IDEA - and that it unusual for me Quote Link to comment Share on other sites More sharing options...
mad_pete Posted September 10, 2009 Share Posted September 10, 2009 Well explosions are explosions and they are always on the hot side. Is it running okay ? I'd suspect jammed open thermostat resulting in massive over-cooling. If it's been laid up maybe the carb jets are blocked and some of it isn't getting any fuel ? I think the carbs do 4 cylinders each don't they ? Quote Link to comment Share on other sites More sharing options...
Guest otchie1 Posted September 10, 2009 Share Posted September 10, 2009 Well explosions are explosions and they are always on the hot side. Is it running okay ? I'd suspect jammed open thermostat resulting in massive over-cooling. If it's been laid up maybe the carb jets are blocked and some of it isn't getting any fuel ? I think the carbs do 4 cylinders each don't they ? Yep, Ya kannae change the laws of physics :-) Even a thermostat missing shouldn't leave you with a cold engine. Only thing I can think of that would give you a cold rad etc is complete coolant loss. Gauge would also read cold...... Quote Link to comment Share on other sites More sharing options...
Quagmire Posted September 11, 2009 Share Posted September 11, 2009 Did it sound like it was on 8? My Dads 101 had a stuck needle (also Strombergs) and this resulted in it running as a V4. Would still be warm though, but two outer cylinders on one bank and two inner ones on the other... In that state it ran badly, no power and sounded like a tractor. It had also been laid up for about 2 years before we bought it and this was right after. Quote Link to comment Share on other sites More sharing options...
bluespanner Posted September 11, 2009 Author Share Posted September 11, 2009 It souds like its running on about 3 cylinders. Drove it to work this morning and got some heat in the engine, i think the stat is stuck or missing. When you put your foot down it seems to pop back from the left hand (when viewed from the front) carb. Pulling the choke out seems to make no difference to how it runs. Quote Link to comment Share on other sites More sharing options...
ThreeSheds Posted September 11, 2009 Share Posted September 11, 2009 If you are getting sparks on all pots then how about stuck float(s) as an easy one to check Quote Link to comment Share on other sites More sharing options...
bluespanner Posted September 11, 2009 Author Share Posted September 11, 2009 Right, bit of a breakthrough I found by chance that at idle, one of the carbs had suction, and the other did not, ie you could stall the engine if you put your hand over one, and the other made no difference. Ive played with the balancing and it has made it much better, but not 100% I still get this popping from the right hand carb, what would cause this? I've set the timimg at about 8 degreed btdc. Is there anything else I could adjust? Roland Quote Link to comment Share on other sites More sharing options...
Quagmire Posted September 11, 2009 Share Posted September 11, 2009 Are you sure there was no suction? That is kind of hard to achieve as it would mean that 2 cylinders per side were not working. From the lrFAQ site: " Each carb feeds the two inner cylinders on the opposite side of the carb and the two outer cylinders either side of the carb" I have had issues where crud has been sucked into the line and effectively blocked off one carb. Pull the leads off on the cylinders that the problem carb is supposed to be fuelling. If you hear no change in engine note you have nothing going on in them. Then i'd check that the needle is rising and falling on the duff carb with changes in revs. If it isnt thats your problem. Fix that and try again... If the needle is moving up and down freely then take the carb off and clean out any crud you may find. Popping back through a carb is a symptom of an overly lean mixture and so would tie in with a fuelling problem. Hopefully that will help. Quote Link to comment Share on other sites More sharing options...
bluespanner Posted September 11, 2009 Author Share Posted September 11, 2009 Well, Its done 15 miles and used 5 gallons of juice?! I thraped **** out of it on the way upto MOT and it seemed to clear, it isnt running badly now! I'll keep you posted. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.