Rover 3.5 gremlin!

Jono FD3 · Post by **Jono FD3** » Mon Jun 24, 2013 2:02 pm

Hi guys, just a quick one to see if anyone can throw a suggestion to the cause of my problem!! Basically the engine was running fine, but started to miss and felt sluggish, then stopped! Initially I thought the coil was breaking down when it got hot, so I changed it to a good one... by then the engine was cold, after a bit of cranking it started, but I had to hold the throttle open a tad to keep her going, but again, once it was at running temp it was missing and backfiring, then died again! It's the later style SD1 setup with a standard 12v coil and ignition amp mounted on the inner wing (upgrade from stock, as per this forum).

throw some ideas at me guys! I haven't taken any plugs out or anything to investigate as yet as I was rushing to get her back on the trailer and home before it got dark!!

Cheers
Jono

JSF55 · Post by **JSF55** » Mon Jun 24, 2013 6:26 pm

I would guess at fuel first, check for crap in the filters/carbs

Jono FD3 · Post by **Jono FD3** » Tue Jun 25, 2013 8:57 am

But with it starting straight on the button when cold, then slowly getting worse as it worms up I was thinking electrical?! But I'll change the filter as its only a few quid just to try

Jono

Post by **scudderfish** » Tue Jun 25, 2013 12:10 pm

My old 3.5 did this to me. I traced it eventually to a duff regulator on the alternator so it was putting out too many volts. This caused the ignition amp to fail in the manner you describe.

Jono FD3 · Post by **Jono FD3** » Tue Jun 25, 2013 4:04 pm

mmmm, shall check the battery voltage then..... I know the thing is a little temperamental, and the belt occasionally sequels like a pig!!