1995 306DT Bosch FI Pump

Might be cold start setting (needs to be done when engine is stone cold-leave it with the man overnight). White smoke? Unburned fuel, would usually indicate duff glowplug. Guess one in four could be a bit iffy. Try giving it two sessions of preheat before starting (not recommended as a regular feature-it can harm the glowplugs apparently). DaveK.

It wasn't anything to do with that - fast idle thermostat working fine - revs around 1050rpm cold, 900 hot.

Is there another setting apart from the fast idle to aid cold starts?

Jim

From memory, yes there is an electrical device on the pump which alters the injection timing when cold. the wires to this are on the front, going to the drive end. Don't confuse with the stop solenoid. What method do you use to start from cold? I always pu my foot down on the pedal first. Starting at tickover might give uneven running to start with.

I'll have a look though I don't recall this.

Doesn't putting your foot on the pedal mean the glow plug heating is cut=20 short after the initial timed setting?

The more I think about it the more I put it down to one or more worn=20 injectors which would possibly explain the large carbon build up on the two= =20 failed glow plugs. Haynes suggests that the injectors should be overhauled= =20 after every 60000 miles. Mines haven't been looked at for 175000 miles! And= =20 are unlikely to be now unless it was at a reasonable price - anybody any=20 suggestions on cost? Apart from the irregular and slightly smokey start in= =20 cold weather the car is running superbly - it is probably only worth =C2=A3=

200=20 so the longer I can run it the better.

Jim

I'll have a look though I don't recall this.

Doesn't putting your foot on the pedal mean the glow plug heating is cut short after the initial timed setting?

The more I think about it the more I put it down to one or more worn injectors which would possibly explain the large carbon build up on the two failed glow plugs. Haynes suggests that the injectors should be overhauled after every 60000 miles. Mines haven't been looked at for 175000 miles! And are unlikely to be now unless it was at a reasonable price - anybody any suggestions on cost? Apart from the irregular and slightly smokey start in cold weather the car is running superbly - it is probably only worth £200 so the longer I can run it the better.

You can get them on an exchange basis for £25 here:

If you look at the top of the injector pump, you will see microswitch which is controlled by the throttle opening. It has to be activated for quite some time before the afterburn on the heater plugs is stopped. Putting your foot down at the point of starting until the engine catches will certainly not affect this.

failed glow plugs. Haynes suggests that the injectors should be overhauled

Don't believe everything which Haynes tell you. They also insist that the cam belt is changed every 36k miles, when Peugeot say 72k. PSA make no mention of routine injector maintenance. I know many engines which have had the original injectors for well over

100k. If one is failing, you will hear that characteristic "knock", one cylender firing more heavily. Injectors drip when badly worn, allowing pre-ignition. If you have a build-up on the heater plugs, a pound to a penny, it is caused by lubricating oil being burnt.

If you go to a decent fuel injection specialist, they will regrind the nozzles for you, or you can get exchange units as already described.

Central Scotland.

Jim

If you got problem with Injectors its best to let some one know what they are doing to do them,like the company in Wimbledon called Watson Deisels,tel numbers 02088793584-02088793861 give them a call if you live, near wimbledon. but i bet they can help you in any way.. from Chris Addlestone Surrey