I have a 3 liter diesel Toyota surf 1993 turbo auto, similar prob, just
would not fire up one morning, noticed glow plug light dd not come on
as usual, by passed and wired direct to plugs, no go, wont start on
Aerostart, engine turns over fine,no start, changed fuel filters, TCV
solenid at bottom of Injector pump clicks ok, definately fuel to low
pressure side but no fuel pumps out to high pressure injector side, ECD
soleniod does not click will test tomorrow, suspecting the injector
pump itself. Also listed under 4 Runner support
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Diesel engines don't have spark plugs. They use compression and heat to fire the diesel. Most diesel engines have glow plugs which are designed to preheat the combustion chamber to help burn the diesel fuel when you start it up. Hope this helps.
sounds like a glow plug problem,if it starts o.k. when warm,but not when cold,does it smoke a lot when trying to start it cold,if so i would say your glow plugs are either burned out or theres no power to them when you turn on the key,do you see the glow plug light on the dash,it may light,but that doesn,t mean the glow plugs are getting power
Typically, the glow plug light not coming on indicates that you have some bad plugs or poor connection. You need to replace the plugs and check the wire connections.
It is interesting how picky diesels are when they aren't warm.
Hope this helps.
Have the cold start valve replaced, it enriches the fuel mix during cold start and check the glow plugs and see if any are bad, to test remove the wires and put test meter to ohms and one by one test each glow plug with one probe to ground and one on the tip of the glow plug see it it goes close to zero if it does not move then that glow plug is bad, replace all that you find bad.
If it has glow plugs or an intake heater you will need to disable the circuit. Then you can use a small amount of ether to spray into the air cleaner.!!! If you spray too much and/or Dont disable the circuits you can damage the motor!!! When you spray the ether, if the engine starts and stalls then its not getting fuel. This could be related to the fuel pump, injection pump, the fuel system loosing its prime(fuel line leak), fuel shut-off valve or solenoid. If it doesn't start then it could be related to your timing, valves or maybe compression.