e30 320 idle

[Paulcl09]

Hi all just bought an e30 320i se 2door manual.
When I touch the accelerator from idle revs dip right down to around 500rpm then they pick only happens from idle.
Any ideas?

Many thanks in advance

[Speedtouch]

Try spraying WD40 around the inlet manifold gasket with the engine idling; if it briefly raises the revs, then you have a leak.

Also check all inlet hoses for splits, and clean the idle control valve and clean/adjust the throttle position switch;

http://www.e30zone.net/e30zonewiki/index.php/Intake

[Paulcl09]

Try spraying WD40 around the inlet manifold gasket with the engine idling; if it briefly raises the revs, then you have a leak.

Also check all inlet hoses for splits, and clean the idle control valve and clean/adjust the throttle position switch;

http://www.e30zone.net/e30zonewiki/index.php/Intake

Thankyou very much will give it ago today.

Cheers

[jimbom30cab]

I had something similar, the vacuum hose to the fuel pressure regulator was split