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14-09-2019, 10:05 PM | #1 | ||
Starter Motor
Join Date: Sep 2019
Posts: 4
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Hi All.
Bought a very tidy KN a few months ago. 1600 DOHC ZM. Seemed to perform well on the highway; a bit slow on long uphills ... yeah - OK - not a turbo or V8. BUT ... one day (after freezing outside in a couple of zero degree nights) ... it began to absolutely fly up the same hills ... like it suddenly found another 20kW. OMG. }}}:-O A few weeks later it was back to crawling over the top of same hills at 80. Grrrr. Hmmm ... dig dig dig ... engine has an MTIS system = for inducing intake air swirl below 3000 rpm via a movable butterfly plate in each intake port, ganged together on a common spindle. These plates are opened/closed via a vac operated pushrod actuator connected to this spindle.. Still with me? OK - actuator must be a bit stuck (tech term). WD40 should fix. I thought ... Under engine with a flood light ... ... ... ... ? What actuator? Nothing there resembling this pushrod actuator. ??? And no evidence of a full width butterfly spindle across all ports ... ?:-| SOOO --- what is in there that can change to improve engine performance ... GRRRRRR. Has there been some sort of a mid-production change? Over to the KN KQ Grand Wizards ... :-D Last edited by ZeLittleRedCar; 14-09-2019 at 10:35 PM. |
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