1986 Turbo Hesitation Problem

[proracer]

I need some help. I have a 1986 Bosch Fuel Injected Turbo. The problem is that it hesitates at low RPM. This happens when pulling away for a stop light. It seems to happen at 1500-3000 RPM. When the engine is past the 3000 RPM mark, it clears up. Could it be timing?, fuel starvation?, Fuel pressure? (new fuel pumps this summer), The idle speed is 950 RPM. This condition happens when hot or cold.......Thanks, Jim

[t70]

It sounds like fuel starvation. However, I would first start by setting your timing (as I recall is 14 degrees btdc) Then you need to inspect your fuel pressure... which is a bit of a process... so I will explain later if the timing is not it.

However, you can also adjust your mixture at the fuel distributor. You can use an allen key to adjust.. and only adjust in very small increments.

The easy way to determine if you're lean or rich is to take off your airbox and push on the air-flow-flap in the fuel distributor... if you push it as you open the throttle and it helps the hesitation, then you're lean.... however, if you add resistance by a pair of pliers pulling up on the flap and it improves.. then you're rich.

in order to adjust the screw -- clockwise richens, ccw leans it out.

Edited November 14, 2007 by USAndretti42
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[proracer]

Thanks, I will give this a try......Jim B)

Edited November 14, 2007 by USAndretti42
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