Tap throttle on shut down
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Mountain Pass
Joined: Jan 2008
Posts: 211
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From: North West Arkansas
Tap throttle on shut down
Just curious here. Do any of you tap the throttle just before you shut down?
Hurt? Harm? No impact? Does it have any impact on the following start up?
Hurt? Harm? No impact? Does it have any impact on the following start up?
Super Moderator
Joined: Apr 2004
Posts: 34,495
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Probably harmful. No proof. Think about though, you speed it up, feed it more fuel then cut the power, leaving a richer mixture in the cylinder as it comes to a stop.
No need to do it, no benefit, as habits go, probably in top 10 easiest to quit.
No need to do it, no benefit, as habits go, probably in top 10 easiest to quit.
Fleet Mechanic
Joined: Jan 2012
Posts: 1,841
Likes: 6
Why would you do that? Not sure what engine if anyone any in particular your asking about but You will find the diesel guys after working the truck hard will actually let it idle for a few min to cool the turbo before shutting it down.
5th Wheeling
Joined: Nov 2016
Posts: 32
Likes: 1
Maybe old school,but I've always believed that if you rev a little just before shutting off,it will dilute any oil film left on the cylinder walls,causing even less lubrication the next time you start up,causing undue wear over time.
Same people that rev on shutdown,probably rev on startup,compounding the problem.
Same people that rev on shutdown,probably rev on startup,compounding the problem.
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