Missing at high speed

This is a 325i with M20 engine and it high speeds and high rpms it
misses. Nothing at low rpms however.

What are some of the first things to check, plug wires and distributor
cap?

Could it be something else like plugged cat or fuel filter? It has
real high miles past 200K and I think it runs really rich.

I would look at coil & wires - cheap & easy


On 23 May 2006 15:22:09 -0700, "SQ" > wrote:

>
>This is a 325i with M20 engine and it high speeds and high rpms it
>misses. Nothing at low rpms however.
>
>What are some of the first things to check, plug wires and distributor
>cap?
>
>Could it be something else like plugged cat or fuel filter? It has
>real high miles past 200K and I think it runs really rich.


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> This is a 325i with M20 engine and it high speeds and high rpms it
> misses. Nothing at low rpms however.
>
> What are some of the first things to check, plug wires and distributor
> cap?
>
> Could it be something else like plugged cat or fuel filter? It has
> real high miles past 200K and I think it runs really rich.

Fuel filter, dist. cap and rotor (very likely) would be my first guess.
Motronic systems don't like worn dizzy caps.

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