Hey guys
As the title suggest I have a weird issue where if I press the brake on my carb auto 1.8 during the Dow press it directly causes the idle to drop a bit. Once fully depressed idle rises again.
I’m thinking two things - electrical draw on alternator ?? Or vacuum leak on brake servo being exposed during the down press.
I’m guessing it’s not normal and it only drops by 100rpm but thought you lot might know!
It does sound very much like a vacuum issue.
Try (carefully) spraying a little clutch/brake cleaner over the vacuum lines while running and see if the idle picks up.
It does sound very much like a vacuum issue.
Try (carefully) spraying a little clutch/brake cleaner over the vacuum lines while running and see if the idle picks up.
Will give this a try! Any main ones to look for?
Yeah, trace the main vacuum hose from the brake servo back to the engine, chances are, it'll be along that one.
Yeah, trace the main vacuum hose from the brake servo back to the engine, chances are, it'll be along that one.
Will give it a crack tomorrow !