newbie saying hello

[Timbo_1975]

i find that hard to believe, puffs of white smoke is indicative of air introduced into the fuel system and there is no way that should happen?

Assuming I understood you correctly in that it splutters as you rev it, then sorry, that is how they are when running 'right' off load.

Yes white puffs are indicative of aeration on a steady throttle, but in this case it's due to the timing.

If you hold revs steady then blip it, you will be able to induce a misfire every time.

When cold and during warm up, it wont do it, as timing is much more advanced.

Reason - when the ecu sees the car stationary it refers to a timing map which in a nutshell pulls ~8 degrees advance throughout the rev range. If you notice the engine is alot more responsive to revving when the car is moving than stopped.

If you wish, rig up a gravity fed pot of diesel direct to the pump to 100% rule out air leaks.

The steel chassis pipes do love to rot, and obviously the short lengths of rubber hose could perforate too. Some filters wont seal properly on the filter head, and occasionally the primer diaphram splits too.

 

[leet]

Assuming I understood you correctly in that it splutters as you rev it, then sorry, that is how they are when running 'right' off load.

Yes white puffs are indicative of aeration on a steady throttle, but in this case it's due to the timing.

If you hold revs steady then blip it, you will be able to induce a misfire every time.

When cold and during warm up, it wont do it, as timing is much more advanced.

Reason - when the ecu sees the car stationary it refers to a timing map which in a nutshell pulls ~8 degrees advance throughout the rev range. If you notice the engine is alot more responsive to revving when the car is moving than stopped.

If you wish, rig up a gravity fed pot of diesel direct to the pump to 100% rule out air leaks.

The steel chassis pipes do love to rot, and obviously the short lengths of rubber hose could perforate too. Some filters wont seal properly on the filter head, and occasionally the primer diaphram splits too.

thanks for the explanation, makes sense although mine does splutter whether warm or cold. I can see some corrosion on a section of the pipe so will cut this out for now and replace with rubber and see what happens.