Join Date: Apr 2018
Location: Friendswood, TX
Throttle Body Balancing problems?
Well, I just finished setting the valves on my 2008. Yeah, it only had 14k miles but I did have 3 exhaust valves between .18 and .20 so I am glad I violated common wisdom and checked them anyway.
So my next step it Balancing the throttle bodies. Since everything was already off, I turned the tank around and broke out the manometer. I got everything hooked up and warmed up the engine. My throttle bodies are about 20- 30 mm apart. Once I located the adjusting screws, I noticed that they were all the way in. So I started loosening them up. the overall RPM went up but there was very little effect on the manometer difference. No amount of adjustment would put them at the same height. Any suggestions?
Some of the problem could be my manometer. It is an old Motion Pro 4 column Mercury unit. Columns 1,2 and 3 work,but I can't get any movement on 4. So I am using columns 1 and 2. I notice that I am getting air gaps in the columns of mercury. Is that indicative of anything? I am wondering if I might be low on mercury?
Any help would be appreciated. Thanks
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