Sluggish turnover when hot...

[mark387mw]

Your experiences please on this problem...
My early Series 2 1985 350i engine is reluctant to turn over when hot. Its fine cold-starting and runs to normal temp but when its been running for about 15 miles and stopped for a few mins its turnover is then sluggish. Its as though the battery is near flat. A bit of encouragement with the accelerator and it'll catch and run fine.
Give it a cooldown period and the battery has no problem starting.
Any suggestions where I should check first?
Battery, Starter motor/solenoid?, ECU hot start??. Should there be a heat shield for the starter motor?
I've searched the forums but most are about (dead) Chimps

Mark

[mark387mw]

Thanks for the advice. The car runs fine when started, just poor turnover when starting from hot. My first check looks like the starter motor then, I'll try to attempt in the week with the fine evenings we're getting

Mark

[mark387mw]

Thanks Andy for battery advice, easiest to replace! Anyone know the minimum ampage CCA required, and one that can actually fit the small battery area?

Mark