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Re: P0300 AND P0304 Missed at higher boost, now a consant misfire Posted by SWEDECAR [Email] (#112) [Profile/Gallery] (more from SWEDECAR) on Fri, 9 Jun 2017 07:55:04 In Reply to: P0300 AND P0304 Missed at higher boost, now a consant misfire, New Tubox, Fri, 9 Jun 2017 05:25:56 Members do not see ads below this line. - Help Keep This Site Online - Signup |
I would probably start with a new set of spark plugs and ignition coils.
Especially if the car has the coils ending in 104 number instead of the 112 newer ones.
Also check the brake vacuum pipe behind intake manifold that it is not broken.
Next would be monitoring fuel pump duty cycle demand using the Tech 2 scanner and see if the fuel pump is nearing its end.
Anders
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