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Hello Neil, You asked about: -------- Apart from dealing with the idle speed control device, the inside of a plenum will get mucked up with crud-laden breather fumes, so galleries and throttle plate are vulnerable to blockage. When that happens, be aware that the amount of air being consumed...

This website does not appear to behave on my PC running IE7. The backward button requires two hits to navigate, also, when the website loads the Back button is not greyed out. Its the only site I visit currently behaving thus. Ramon

Hello John, You prolly need to do a cooling system pressure test to veryify the source of that interior leak. As far as the temperature problem is concerned, why change everything? They cant all be duff. It seems like a classic air-lock problem combined with a need for flushing and...

Anyone? Expert feedback appreciated! Do you think this will help identify the faulty component(s)? Engine stutters/stops then starts and runs on for long or short periods before repeating same. Rig up two 4/5 watt 12 volt bulbs (or 2V, 15mA LED's + 680 ohm resistors) on test leads into...

Bliss! Just music to my ears, reading that! :confused: I have this unfulfilled mission thro' my website, to persuade every Rover Efi owner to check these things out. It's difficult because the task seems daunting to most owners, yet, air leaks into the plenum and gummy goo therein are the...

As the irish rover says they will very likely all read the same when oily but why is one plug oily at the getgo? that aint right so - possible reasons: oil scraper ring on that cylinder is broken but the compression rings are still ok. one or both valve guides on that cylinder are worn or...

Hello Perry, With all that expensive new stuff and the checks already performed, what else could be making the mixture LEAN? Check for rogue air leaks into the plenum, The ECU cannot compensate for these. Try the process defined for my Rover 3.5 SD1 Efi system, it is readily applicable to...

It's not right because the vacuum function will be inhibited. Which component does the flattened pipe go to. If it disappears down behind the engine towards the rear of the car it may be a vacuum feed to the transmission which tells a valve the state of the engine and when to change gear...

That probably narrows it down to this Plumes of thick white smoke are invariably due to combusting ATF caused by a damaged automatic transmission modulator valve allowing fluid to be sucked into the intake manifold via the transmission vacuum feed tube. Simultaneous transmission malfunction is...

Hello Al, Petrol is only one clue. Best to know, Is it Carb or Injection, Manual or Auto? They all have different things going on. Because I'm a bit more familiar with it, I'm going to assume "Injection with an Auto box." Really White is either Steam or ATF. This extract from my website...

Hello Iain, You clearly have reliable sparks because the thing starts regularly and even tries to burn the fuel into those sooty deposits before it croaks and drowns in excess fuel. So your engine is overfuelling continuously and you have to look at all the things that will cause that fault...

Hello Brad, Try adapting my RV8 process to your car. The geometry may be different but the principles should easily apply. Rover SD1 Tips 'n Tricks - #2 - V8 Coolant Fill without Airlocks Ramon Vintage Model Airplane and Rover SD1 3500cc Twin Plenum Vitesse

Normally the electric fans come on for two reasons. high pressure in the aircon system and high radiator temperature. If your fans are not coming on check the rad temp switch/wiring or the fans fuse. Ramon Vintage Model Airplane and Rover SD1 3500cc Twin Plenum Vitesse

Regret to inform the alternator does not provide any signal to the ECU, the tacho, or the cruise control overspeed relay. that signal come from coil negative and goes to pin 1 of the ecu via a trgger resistor as per this typical diagram of the period. Ramon Vintage Model Airplane and Rover...

Hello Stu, In a high pressure system, would there would be a non return valve in the pump - if so, could it be wedged open with crud? Ramon Vintage Model Airplane and Rover SD1 3500cc Twin Plenum Vitesse

Hello Hippo, Being an old car its liable to suffer elecrical connection problems and even the Wiring loom on your transplanted Efi system has the same issues. So check all your ignition and fuel injection electrical connections. The majority of Rover Efi faults are caused by connector...

Hello Stuart, Not knowing the year of your car or the injection system is a problem, so I hope this is helpful. You need to check if the leak is coming from either the top of the hose in which case you should be able to tighten the hose clip or the botton in which case the swaged joint is...

If your cruise control is anything like the hella gr65 then your symptoms definitely indicate the vacuum dump switch or the brake light switch needs adjusting according to your workshop manual. the gr65 is explained here: Rover SD1 Hella GR65 Cruise Control I put circuits here yesterday...

Jason, more stuff might help 1 Line Fuse 5 Amps 2 Speed Transducer 3 Brake Stop Light Switch 4 Brake Switch & Vent Valve 5 Clutch Switch & Vent Valve 6 Drivers Control Switch 7 Overspeed Relay 8 ECU 9 Vacuum Control Unit 10 Pneumatic Actuator 11 Fuse: Stop Lamp Circuit 12 Bulb Failure Monitor...

Hello Jason, If you are running the hella GR65 cruise control system or similar, then this may help you: Rover SD1 Hella GR65 Cruise Control There is other related cruise stuff on the website. Ramon Vintage Model Airplane and Rover SD1 3500cc Twin Plenum Vitesse