350i keeps cutting out when hot!
Discussion
That's like asking if you get poppadoms wih an Indian meal 
Sounds like you just need the base settings tweaking - throttle plate clearance, throttle pot setting, idle speed, ignition timing.
After that... air leaks, fuel pressure...
Pop to the library and borrow an SD1 or Range Rover Classic manual; most of what you need will be in there. Failing that you can find them on Ebay for pennies.
Sounds like you just need the base settings tweaking - throttle plate clearance, throttle pot setting, idle speed, ignition timing.
After that... air leaks, fuel pressure...
Pop to the library and borrow an SD1 or Range Rover Classic manual; most of what you need will be in there. Failing that you can find them on Ebay for pennies.
Cutting out is not the same as stalling. Presumably it restarts and continues to run lumpy until is stalls again. So very likely not ignition either.
And generally stalling will be a mixture problem, most likely not a mechanical defect.
Because it stalls at slow revs this implies a weak mixture as the torque at idle with a weak mixture is abysmal. Also, although not definitive unlikely to be a gross rich mixture otherwise flooding would disallow easy restarting.
Weak mixtures are nearly always caused by rogue air leaks, so you have to test for them.
find a complete process here:
http://www.vintagemodelairplane.com/pages/Rover_Te...
There are seemingly easier ways, using a tin of plus gas or wd40, but if after they don't expose a leak, the recommended process will give you the definitive result.
Because the majority of your Efi system faults are caused by rogue air leaks and local Efi wiring/connector problems these are the first ports of call.
Bear in mind that your Efi plenum may be well and truly gummed up due to poor plenum preventative maintenance in combination with accumulated crap coming from the crankcase ventilation system. Check out the idle and breather galleries and if they are blocked the plenum innards are defo in dire condition.
Next, certain sensor components come under suspicion regarding mixture control. You'll know what they are from your prior studies of recommended reading material, but think about coolant temp sensor, throttle pot, pressure regulator and AFM, all easily tested by the processes available from the Efi component index
http://www.vintagemodelairplane.com/pages/Rover_Te...
One other thing to bear in mind, an Efi V8 stood for a long time will certainly suffer these days from crud in the fuel system. Many emerging SD1 Efi's are so affected, with complete systems from tank to filter needing cleaning.
They run OK for a short while after resurrection, then the system starts to falter, the pump seizes, the filter clogs and - Bingo - the light goes out! Lots more fun to come - methinks?
If you are having problems getting the Gist of your Efi System, obtain a copy of the efi ops manual.
Be Lucky.
And generally stalling will be a mixture problem, most likely not a mechanical defect.
Because it stalls at slow revs this implies a weak mixture as the torque at idle with a weak mixture is abysmal. Also, although not definitive unlikely to be a gross rich mixture otherwise flooding would disallow easy restarting.
Weak mixtures are nearly always caused by rogue air leaks, so you have to test for them.
find a complete process here:
http://www.vintagemodelairplane.com/pages/Rover_Te...
There are seemingly easier ways, using a tin of plus gas or wd40, but if after they don't expose a leak, the recommended process will give you the definitive result.
Because the majority of your Efi system faults are caused by rogue air leaks and local Efi wiring/connector problems these are the first ports of call.
Bear in mind that your Efi plenum may be well and truly gummed up due to poor plenum preventative maintenance in combination with accumulated crap coming from the crankcase ventilation system. Check out the idle and breather galleries and if they are blocked the plenum innards are defo in dire condition.
Next, certain sensor components come under suspicion regarding mixture control. You'll know what they are from your prior studies of recommended reading material, but think about coolant temp sensor, throttle pot, pressure regulator and AFM, all easily tested by the processes available from the Efi component index
http://www.vintagemodelairplane.com/pages/Rover_Te...
One other thing to bear in mind, an Efi V8 stood for a long time will certainly suffer these days from crud in the fuel system. Many emerging SD1 Efi's are so affected, with complete systems from tank to filter needing cleaning.
They run OK for a short while after resurrection, then the system starts to falter, the pump seizes, the filter clogs and - Bingo - the light goes out! Lots more fun to come - methinks?
If you are having problems getting the Gist of your Efi System, obtain a copy of the efi ops manual.
Be Lucky.
Pilo-Wedgebits said:
John, What would you recommend you do to a wedge that has just come out of a long period of "storage" Cheers Shaun
Shaun, See new thread with some thoughts on your question.http://www.pistonheads.com/gassing/topic.asp?h=5&a...
Edited by honestjohntoo on Thursday 12th November 17:00
Gassing Station | Wedges | Top of Page | What's New | My Stuff