2007-03-12 17:00:19 · 8 answers · asked by chuy 1 in Cars & Transportation ➔ Maintenance & Repairs
The greater the load, the lower the vacuum reading.
Happy Motoring
2007-03-12 17:04:25 · answer #1 · answered by Ironhand 6 · 0⤊ 0⤋
The more you accelerate, the more the vacuum.This is due tto when you accelerate, the throttle that allows air to come into the engine opens wider as you accelerate.Thus causing more vacuum by the pistons as they make their down stroke pulling the air into the engine.You need this vacuum to operate alot of systems,ie; power brakes,heater controls , and fuel to air mixture.Vacuum also is measured and used by some of the engines' sensors. I hope this has helped you.PS: That is why some vehicles use turbo fans to push even more air into the system causing greater air amounts to be compressed creating more power to the power stroke of the piston.
2007-03-12 17:13:06 · answer #2 · answered by tturbod2001 4 · 0⤊ 1⤋
Most people on this thread are getting ventury pressure and manifold pressure mixed up.
The more load, or the higher speed, the less manifold pressure.
The throttle is opened to accommodate the increase in load, producing less "choke" on the engine and less vacuum.
The faster the engine is running, also the same happens. The throttle is opened and the choke is diminished, and vacuum decreases.
2015-07-08 08:09:50 · answer #3 · answered by Paul 1 · 0⤊ 0⤋
examine the ecu gasoline map. The EGR shouldn't consequence gasoline intake. If that's occurring and rancid, i'm guessing that's a unfastened section interior the engine. Code 32 would not specifically talk with the EGR, purely the area. There may be particularly some distinctive issues inflicting the sunshine. additionally, is it a examine engine easy or a engine service easy? examine engine = subject, engine service = ordinary service mandatory on a factor.
2016-10-18 06:04:43 · answer #4 · answered by ? 4 · 0⤊ 0⤋
when any engine gets in a strain it pulls more vacuum,and this make it use more fuel,when it running out of a strain it will run more efficient,its just the way engines work,like us when we run we breath harder,so does an engine,good luck i hope this helps.
2007-03-12 17:04:47 · answer #5 · answered by dodge man 7 · 0⤊ 1⤋
Vaccum fluctuates with RPM not with load. High Rpm equals air velocity so there would be no low psi vaccum.
2007-03-12 17:11:14 · answer #6 · answered by Mark L 4 · 0⤊ 1⤋
the faster and or the harder the motor has to work the more vacuum
2007-03-12 17:05:22 · answer #7 · answered by Anonymous · 0⤊ 1⤋
i'll back "sittinon..." he is right on target(great explination)
that dodge guy needs a refresher coarse
tatto,marc, & red are just out there far
2007-03-12 17:49:41 · answer #8 · answered by texmech31 2 · 0⤊ 0⤋