I have been chasing this misfire vibration problem all around, having said I’d be ripping the gearbox out I started. I got the interior floor pan etc removed and front prop off. Then I took the rear prop off… Well, I checked both prop shafts when this issue first showed itself, I imagined this is what it would be, but they seemed fine, hence going down the paths I did. I noticed that there is a rubber seal which was, I guess, stopping the metal and metal action when I manually turned the prop and stopped it from clunking. So either way, new prop ordered and fitted tonight. I then dropped the floor back in and refitted the steering wheel, hand break mechanism and bits so that it’s drivable for a test. This may not be issue, but I hope it is.
The gearbox extraction has commenced. I was thinking I’d remove the rear prop and go for a drive on the front axle only, but decided that pointless. Since if it were the diff surely it would cause issues at any time it was udner load, not just certain gears and rev ranges. So out comes the gearbox. I’ve got the lamp on the extension cord hanging by the dash for decent light.
Dorset Land Rover Club ran a Pay and Play at a site in Crossways. I got to go at member price because they have an agreement with Woolbridge. Then i and got stuck in a deep bit of water. I was pulled out and went off again having fun. Though i still have the issue and am not really any the wiser as to what it is. Though i think i blame the gearbox, so will be pulling that out next. Though i might remove the rear prop shaft first fo rule out the rear diff.
Out with the new and in with the old, or perhaps i should say, out with the modern and in with the original. I’m currently of the thinking that the electronic ignition set up the cause of all this fuss. The kits doesn’t have a great name for reliability. I have become aware of this since going that route and am now perhaps experiencing this issue first hand. First off I brought the Land Rover into the garage soaking wet. Then I dried the drivers side wing so that I could lean on it without getting wet. Fired it up and it ran, so nothing was disaterously wrong, now it just needs a road test. Although before I do that, I shall buy and fit a new coil, just to be certain. Also I think the coil I have installed to designed to match the electrionic ignition system, and I […]
There was still a little dribble of coolant coming from the same place. I’ve decided that my torque wrench is probably inaccurate, so i tightened all the bolts more. Hopefully this has done the trick. All taken at different times during the course of messing about out in garage.
Found another coolant leak.. Pulled all the plugs so that I could access the row of bolts down that edge of the head. Pulled the rocker cover off also and checked them all. They’re all at 120 Nm now. Fingers crossed. Next it’ll be a test run and recheck..
I had a fuel leak caused by a damaged O-ring, so ordered two more right from SU themselves. Fitted it last night and now I have running Land Rover, short of any coolant/antifreeze, so can’t test it yet. I did fire it up to confirm that it will start and idle, but only briefly.
Valve clearances done, that bit wasn’t too bad, i did have help, a friend did the engine turning bit using a ratchet on the crank and i did the clearances. Having done that i then tried to stop the fuel leak on the float bowl hose to the jet. But it turned out that the rubber washer was badly cut. I’ve now got another on order. Also found a fuel leak on the discharge hose from the fuel pump. Fixed that easily by tightening it. The left hand imagen shows the hose curved from the brass nut at the top middle of the photo. This connection is the issue.
Torqued all the 1/2″ head bolts to 90 Nm and the 5/16″ ones to 30 Nm. then i went around re-attaching all of the hoses, manifolds etc to the head. Next job is the valve clearances.
I have lapped all of the valves in, now I just need to re-assemble the head and pop it back on with new stem seals and gaskets etc etc. Shouldn’t take too long. Looking lovely..
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