 Q.
Hi there, I have a Skoda Favorit 136LX with an original Pierburg 2E3
carburetor. The problem with this engine is that it hesitates to gain
speed when starting from dead stop. That is, for instance, when I stop
at the traffic light post. When lights turn back to green, I have to
press the throttle pedal all the way down, and the car just merely move!
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A. It will take about 10
seconds (still holding the throttle full pressed) for the car to reach
the desired speed. When the engine is kept on the neutral gear (we call
it on the "free gear" over here), the engine revs okay. That is, the
engines responds to the throttle pedal. Apparently, the problem is less
evident when I am running on a speed greater than 35 Km/hr.
At that speed the engine
response is okay. But when I am running at slow speed, or from dead
stop, the engine will require about 10 seconds to reach the required
speed, even though the throttle pedal is pressed all the way down!!
If, for example, there
is a 30° slope, and there was no room to reach the 35km/hr, the car will
move slower than a tortoise for the whole length of the slope. On the
other hand if the speed before hitting the slope was greater than 30
km/hr, the engine will respond well, and I could also give more throttle
if required.
The carburetor was
cleaned twice, the clutch is not slipping, I have no engine overheating
nor backfire. Someone mentioned that even though there are no back
fires, the problem could well be related to the ignition coil and/or
distributor. How could this be possible?
What is you judgment, please? Many thanks in advance, and really would appreciate your help.
Best regards,
Chris
Chris
A. That
carburetor has an accelerator pump inside it. The purpose of this
accelerator pump is to give the engine an extra shot of fuel to get the
engine going under a load.
The accelerator pump is a
piston with a rubber cup on the end It sits inside a chamber and is
connected to the throttle linkage. This rubber cup wears out and doesn't
give the engine that extra shot it needs.
I have one Pierburg
carburetor kit here and it doesn't have an accelerator pump in it. So I
would have to guess that the whole carburetor would have to be replaced.
But, before doing that, replace the fuel filter. A clogged fuel filter would give the same symptoms.
18 - Typical Accelerator Pump Assembly
1994 Skoda Favorit
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