13B Uneven power delivery
Hello again,
I have yet another thing thats bugging me about my 87 N/A 13B. I notice that at 4K RPM the engine slows down, then after that it gains its power again. I'm hoping that it is a fuel filter, since it hasn't been changed for awhile (over 50K miles ago). I will replace this anyways. Could it be something else? |
does it bog?..does it hesitate and then catch again.
Can you elaborate a little more? |
Most likely the "3800 RPM hesitation". The secondary injectors switch on at 3800 RPM and 0 manifold pressure, and if this is not done properly by the ECU, it can result in hesitation. The most common source of the problem is poor ECU grounding. There are many threads on this subject, and I think it's even referenced in the 2nd gen FAQ at the top of this section.
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Originally Posted by misterstyx69
(Post 11419077)
does it bog?..does it hesitate and then catch again.
Can you elaborate a little more?
Originally Posted by RotaryRocket88
(Post 11419350)
Most likely the "3800 RPM hesitation". The secondary injectors switch on at 3800 RPM and 0 manifold pressure, and if this is not done properly by the ECU, it can result in hesitation. The most common source of the problem is poor ECU grounding. There are many threads on this subject, and I think it's even referenced in the 2nd gen FAQ at the top of this section.
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