Engine: 2.3 F/Inj B23E/B230F: - weird effect of cleaning TBA

brens-s80 · Aug 29th, 2007, 20:16

Hi all ,

maybe someone can shed some light on this. Before cleaning out the TBA on my 88 240 glt it idled nicely around 900rpm.

So this evening I decided ( and weather permitted) to throughly clean out the

(1) lower assembly where the air duct feeds into . My god the amount of carbon residue was hard to believe. It literally had to be cleaned out in chunks.

(2) Then I removed the bellows ( remembering Mike's tip about using tipex to mark the orientation of the bellows ) and it was the same scene on the actual TBA and butterfly. Large large amounts of black deposits.

Anyways a large full can of Carb spray cleaner later and lots of cloths and all is nice and shiny again.

I then removed the cold air mechanism from the airbox ( as per Ian's recommendation ) and fired up the car .

Whoosh now idles at 1400rpm. I had to fully screw in the rpm adjuster screw to drop it to 900rpm. I checked the timing and its spot on .

So I'am wondering have I seriously cleaned something too much or dislodged something within the CI Fuel system , as I had to fully screw home the adjuster ?.

the car drives fine when I took it out for a long drive.

any idea's

regards

brendan

Aug 29th, 2007, 20:16	#1
brens-s80 VOC Member Last Online: Jun 17th, 2022 11:33 Join Date: Dec 2004 Location: naas View Photos By: brens-s80	weird effect of cleaning TBA Hi all , maybe someone can shed some light on this. Before cleaning out the TBA on my 88 240 glt it idled nicely around 900rpm. So this evening I decided ( and weather permitted) to throughly clean out the (1) lower assembly where the air duct feeds into . My god the amount of carbon residue was hard to believe. It literally had to be cleaned out in chunks. (2) Then I removed the bellows ( remembering Mike's tip about using tipex to mark the orientation of the bellows ) and it was the same scene on the actual TBA and butterfly. Large large amounts of black deposits. Anyways a large full can of Carb spray cleaner later and lots of cloths and all is nice and shiny again. I then removed the cold air mechanism from the airbox ( as per Ian's recommendation ) and fired up the car . Whoosh now idles at 1400rpm. I had to fully screw in the rpm adjuster screw to drop it to 900rpm. I checked the timing and its spot on . So I'am wondering have I seriously cleaned something too much or dislodged something within the CI Fuel system , as I had to fully screw home the adjuster ?. the car drives fine when I took it out for a long drive. any idea's regards brendan

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