mrfixitchapman
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Thanks for the info MrFix!
So I think I will start using my hand guage more. I need to read up and see if I have Direct or Indirect tho. Oh, I don't check fluids weekly, but maybe monthly. And I think I will roll on to 7500 miles and call it then even if the computer says I have more left.
Surely you have an opinion about fuel additives, like injector clearner every oil change...??
Your car should have been equipped with a direct tire pressure sensing system. Look in the owner's manual for the details. Oh, and some cars use different pressures for front tires and rear tires. And you can be a few PSI over without tripping the warning. Many GM cars use a particular sequence to reset the monitor system after tire service or rotation. It'll be in the manual.
Our shops have found that the best value for injection system cleaner is the Gumout Injector Cleaner and Valve Deposit Remover. More engine performance problems are caused by intake valve deposits than by injectors getting dirty. The only proviso is that we recommend one treatment every 10,000 miles or so. And we recommend using the additive this way, use twice as much as the label says. I believe that it tells you to add one bottle for every ten gallons, we use one bottle for every five gallons and we use ten gallons of fuel as our basis. So, when you have ten gallons of fuel in the tank add two bottles of additive and run that tank down to empty. Don't add more fuel, you'll dilute the mixture to the point that it becomes ineffective. Fill the tank with fresh fuel and drive away. The other additive that we have had good luck using is Techron. It's a Chevron product, and it's availability is kind of hit-and-miss around here. We get Gumout at Wally World. Most modern gasoline blends have pretty good detergent additives. For us the problem is cold temperatures, (it gets to -20F pretty often in winter), and short trips. Cold metal in the engine causes a lot of fuel condensation, which in turn causes a lot of deposits. We do use a different detergent for cleaning injectors that show poor spray patterns, but intake valve deposits are still a bigger problem for us.
DC
---------- Post Merged at 09:13 PM ---------- Previous Post was at 09:12 PM ----------
Sounds like a decompression algorithm. Do we adjust the conservatism setting, or is this a gradient factors system?
You COULD just use the tables.......
DC