Timing 3.9 V8 1990 EFI R/Rover Classic

Hi can someone advise on how to manually setup the timing on the above.

fitting chain or dizzy ?

Do a search, believe the procedure had been detailed before. In simple terms though, static time to TDC and fire it up, technically you need to get the engine warm before timing it up to account for the effects of fast idle. Disconnect vac advance, then using strobe light set timing to 4 - 6 degrees BTDC. Reconnect vac advance let it settle down and see if the idle is smooth, then take hold of the throttle linkage and give it a sharp pull, the engine should pick up without hesitation then fall back to idle.

BTW I assumed you meant ignition timing. Valve timing is something completely different.

Bit of extra advance is good for mine, about 12 degrees BTDC now. As much as I could manage basically, doesn't pink so I'm happy

Hi its Ignition timing that's the problem,all my fault i'm afraid engine was running ok until i moved the Dizzy,stopped it then would not start again, have fitted New Dizzy with amplifier,New ignition coil,New Leads,checked that they are in the correct order,tried removing No1 plug and bringing it upto the top with timing mark at about 2 deg before TDC aand adjusted dizzy to bring rotor arm inline with No 1 lead on cap, just tries to fire with poppin noise still no joy,can someone please advise further.

did you fit new dizzy with engine on tdc no1 oth valves closed

Timing still out or flooded, sounds exactly the same as when I've had timing problems.

Keep it spinning over with fuel pump fuse pulled. Get plenty of battery power on the job.

Keep varying timing and it'll go eventually.

Not to sure about No 1 being at TDC when fitted dizzy but can allways doit again and start from there,will try the fuse removal idea and get back to you it also runs on LPG will it have any bearing on the Timing,Can you advise what it should be timed at having done some searching I see it can be has High as 12DEG BFTDC.

Assuming you have read Haynes/rave and done the job right, then it can only be timing and/or now flooded.

I've had this with mine MANY times where it just cranks over going pop pop pop.

Only way is to get it dried out, keep it spinning over quick and mess about with the timing till it starts to catch, when it does eventually fire up then rev it up and do a silly dance

Turn over the engine by hand with the dizzy cap until the rotor arm is pointing at roughly the 5'oclock position. That's roughly where the arm should point at tdc for number 1 cylinder. Then move the dizzy body until your ht lead running to the number 1 plug is lined up with the rotor then roughly tighten the dizzy bolt and give it a try starting while moving the dizzy slowly abit.

I'm hungover and had 2 hours sleep so that may not make any sense, paaahhhhh!!

as i said though, assuming the job has been done right.

has engine been set to tdc on compression stroke? it could be 180 degrees out.

you can do this by cracking plug 1 and listen for air escaping as you approach tdc, that way you know the valves are closed.

then pop your dizzy in and set up as dirtydisco said

Redacer 180 said:

Hi can someone advise on how to manually setup the timing on the above.

Click to expand...

See my reply here.... http://www.landyzone.co.uk/lz/f8/v8i-3-9-distributor-prob-172167.html