Poor Acceleration On Start Up

[LS Jasper]

Hello all

Not needed to post for ages as the 1995 LS400 has been running well. However with a bit of damp weather I am getting sluggish acceleration while the engine is warming up. I run on lpg and once the engine is warmed up the problem has gone. Feels like its struggling to find the next gear.

Any thoughts?

Jim

PS Been side tracked with a 1991 v8 Soarer lately!

[steve2006]

Cold damp weather and improves when warmed up?

I would be thinking ignition related coils/HT leads.

Does it sound like it's running on 4 cylinders?

[LS Jasper]

Yup cold damp weather and improves when warm. It 'feels' like it's not firing on all cylinders.

Jim

[LS Jasper]

Finally had time to replace the plugs and leads and noticed an immediate improvement. Have to wait for a damp morning to see if main issue resolved.

However when removing both the 'C' leads half the plastic insulation 'nipple' came away with the lead too. Same on both sides. I was having to drive home so needed to put everything back together. I couldn't replace those two leads because half the holder is still inside the lead. I flayed the metal head so that it was a tight fit, refitted both leads, pulled down the lead cover as best I could and hoped for the best!

No noticeable issue. What should I do? Can I replace just the part if the distributor that has the six connectors? Or if it seems fine leave it.

Hope my explanation makes sense. Didn't have chance to take snaps.

Jim

[steve2006]

Do you mean the coil tower where the HT lead fits into has broken?

[LS Jasper]

Yes. I couldn't think of what to call it! BTW started beautifully this am and acceleration was very strong and smooth from cold/damp.

[steve2006]

Sounds like you've sorted it, try some silicone sealant on the broken parts to seal moisture out and keep it all in place.