Green guy questions
#1
Green guy questions
I want to thank the guys who answered my previous questions.
I recently made the move from a gas truck to a diesel and know nothing about them. I have an 87 f350 6.9idi. I'm trying to understand diesels better-
does this truck have one diesel pump that sends fuel to 8? injectors?
Or does it have one pump per injector?
Thanks in advance for the help. F
I recently made the move from a gas truck to a diesel and know nothing about them. I have an 87 f350 6.9idi. I'm trying to understand diesels better-
does this truck have one diesel pump that sends fuel to 8? injectors?
Or does it have one pump per injector?
Thanks in advance for the help. F
#2
Join Date: Mar 2005
Location: Marlboro Mental Hospital.
Posts: 61,003
Received 3,118 Likes
on
2,174 Posts
#3
#4
Injector pump is right on the top center of the engine. On the aft-facing side, you'll see one line in the center and eight lines around the outside. Fuel goes in the center line and is distributed, in a timed fashion, to each of the eight outer lines, to each of the eight injectors. Unlike a gasser, where spark timing determines when a cylinder fires, there's no spark with a diesel, so it's fuel delivery timing that determines when each cylinder fires. That's why the lines go from the IP to each injector in the engine's firing order. Also, the rotational position of the IP determines the injection timing.
#5
Injector pump is right on the top center of the engine. On the aft-facing side, you'll see one line in the center and eight lines around the outside. Fuel goes in the center line and is distributed, in a timed fashion, to each of the eight outer lines, to each of the eight injectors. Unlike a gasser, where spark timing determines when a cylinder fires, there's no spark with a diesel, so it's fuel delivery timing that determines when each cylinder fires. That's why the lines go from the IP to each injector in the engine's firing order. Also, the rotational position of the IP determines the injection timing.
Thread
Thread Starter
Forum
Replies
Last Post
nw_ia_guy
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
12
01-20-2015 10:15 PM
KAT_Ayanami
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
25
11-20-2011 07:57 PM