WildcatYXU From Canada, joined May 2006, 2747 posts, RR: 5 Posted (4 years 2 weeks 5 days 13 hours ago) and read 1363 times:
So, here's the problem. I have this old truck, a 1995 Ford F150, 5.0 V8. It's old, rusty, but it helps a lot with all the stuff we do around the house. Of course, sometimes it comes up with some non-pleasant surprises. I just got rid of one today - replaced the rusted-trough front brake lines and when I started the truck to take a test drive, coolant started to spray from the throttle body heater fluid intake. The fitting eventually broke off completely. The fitting is pressed into the aluminium throttle body, so when it breaks, you have to replace the whole thing. I'm really not in the mood to spend money on new throttle body and I'm not sure if I can find one at the wreckers, so I just bypassed it. So, fellow petrol heads, have you ever heard about it? Will the engine really miss it? Why is it there at the first place?
L-188 From United States of America, joined exactly 16 years ago today! , 30102 posts, RR: 58
Reply 1, posted (4 years 2 weeks 4 days 22 hours ago) and read 1307 times:
Don't know. My guess is emissions.
It seems to be the source of every superfluous vacuum hose on modern engine.
My guess it that the fuel will stay colder it and as a result you will run a risk of the fuel gelling in the trottle body. The fuel being pushed into the injector is pressurized by the fuel pump. It will cool as it passes the injector causing a temp drop, enough that it may not atomize due to gelling. Adding heat from the cooling system prior to the injector will keep the fuel from cool below the point of gelling
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