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I have now sorted out my engine problems by carrying out the following: New 3.9 camshaft, hydraulic lifters, timing gears, distributor drive and timing chain. Fitted later SD1 cylinder heads ERC 0216 (bought used off eBay) Replaced distributor points with electronic module Whilst I had the...

That's great news Neil. Rob

Hi Neil, a couple of questions for you if you don't mind to help me with my diagnostics: Did you observe the operation of the rockers and valve travel with your worn camshaft? (I'm getting good length of travel on mine). Did your engine rev freely when not driven with the problem only occurring...

I've now checked the plug leads and they are in the correct order.

I will re-check, but I'm sure that the leads are in the correct order.

Hi Neil, hopefully replacing the camshaft will cure your problem. It looks like I might have to bite the bullet too and replace the camshaft as my symptoms appear identical to yours. Rob.

Hi, if your engine is equipped with twin SU HIF6's, throttle return springs along with most other SU parts are available from Burlen fuel systems. Rob.

Following on from my post on SU HIF6 carbs (weak running at around 3000rpm and then possible a worn camshaft) as a test on the running engine I removed each spark plug lead individually, then replaced and noted on the first two cylinders I tried that this created a slight misfire but the engine...

I have removed the rocker covers today as per the earlier post and turned the engine over by hand and I'm getting good movement on all the valves suggesting that the camshaft is okay? Afterwards I started the engine and just as a test I removed/replaced spark plug leads individually which...

I have just been reading on the internet the effects of a worn camshaft and one possible symptom is weak mixture under load which is what I am experiencing. Are there any checks I can do without having to strip down the engine to inspect the camshaft i.e. measuring the distance travelled by each...

I haven't found a cure yet, the original SU HIF6's have been rebuilt and fitted and the problem is still there! The only thing that I haven't changed is the distributor so I might as well replace that to eliminate it from the proceedings. Interesting to see if changing the camshaft and followers...

Thanks for your replies. Fitted a different starter motor and that cured the fault (faulty solenoid causing the starting problem). Re the carbs problem I am now in the process of rebuilding the original HIF6's to refit them to see if that cures the weak mixture issue as I have not been able to...

Thanks for your replies. I will be installing a 40A fuse and relay. Regards, Rob

Hello everyone, Having read some recent posts on fused supplies for a Kenlowe electric fan installation I've check mine to discover that it's taken directly from the battery +ve and not fused. Can anybody advise as to what rating of in-line fuse I should install. Cheers, Rob

I've now removed all the spark plugs and they are all the same indicating that the engine is running on a weak mixture. Trouble now is it won't start to check for any air leaks - starter motor solenoid clicking, engine not turning over. Battery removed and tested okay, starter motor removed and...

During the cylinder head overhaul I did also fit a spare set of HIF 6 carbs to the original P6 inlet manifold. These carbs had been stripped down, checked over, cleaned out and new gaskets etc fitted and according to the ident tags on them they are off a 1979 Rover SD1. They needed to be set up...

Thanks for your reply. I have checked all over for air leaks but can't find anything. This problem has only started after removing both cylinder heads during the winter months for an overhaul and then refitting them. So I'm wondering whether the inlet manifold gasket may be at fault causing an...

Hi all, I'm having problems setting up the twin SU HIF6 carbs on my Rover P6 V8 engine. The car drives fine when cold on choke but when warmed up it's reluctant to pull above 3000 rpm. Pulling out the choke again at this point and the car runs fine suggesting its running too weak? However no...

Thanks for all your replies, plenty of options to look into. Rob.

My 1973 P6 V8 was fitted with an Accuspark electronic ignition module replacing the points and condensor in the original distributor. This module failed and I replaced it with an identical Accuspark unit and it appears that the replacement has now failed! Can anybody recommend a reliable make of...

Thanks Steve, I will check that one out.

I'm having problems starting my 1973 P6 V8. When turning the ignition key the starter motors fails to engage and after about 4 attempts or so of turning the ignition key off and then on again it engages, turns the engine over and it starts. The solenoid appears to be working okay as it is not...