You are using an out of date browser. That's why we refer to it as hesitation, it's a moment's pause before the vehicle actually begins to accelerate and respond in the way you expect it to. http://patreon.com/donyboy73Connect with me on these social media spaces (plus that's where I announce contest winners)Facebook: https://www.facebook.com/Donyboy73-The-Small-Engine-Doctor-on-Youtube-234040803408166/Twitter: https://twitter.com/donyboy73Instagram: https://www.instagram.com/donyboy73/If you enjoy my videos make sure to comment, share, thumbs up and subscribe. //-->. imagelinks[1]="http://www.ezboardwalk.com/" Technically your mass airflow sensor should be able to handle cold temperatures but if it gets too cold that may not be the case. What Happens When An Engine Is Seized From Sitting? Loger , Bud your missing the entire point . No bogging and just cut a cord of black locust Can it really be that sensitive to the amount of oil? Test your engine compression. When manufacturers stipulate a percentage or ratio of fuel to oil they are not offering guidelines, they are being quite specific, and accuracy is required to comply with the suggested ratios. Make sure your fuel tank has enough gas. engine speed is achieved. For the price that you can get them, for just a couple of pounds, the best idea would be to have one on standby so that you can just replace it if you think it may be the cause of the engine bogging down. If you take look at the valve when rigid it reduces the pumping efficiency of the fuel available for the engine as it doesn't have the same degree of movement. is directing the injector to squirt in a tiny bit more gasoline to make a richer fuel mixture towards the end of warming your car up faster. //-->,