1994 Buick Century, 3.1 V6 Problems!
#21
Junior Member
Posts like a Ricer Type-R
Thread Starter
Join Date: Feb 2014
Posts: 19
Likes: 0
Received 0 Likes
on
0 Posts
I ordered a new fuel sender / pump assembly
http://www.amazon.com/gp/r.html?R=2H..._26725410_item
Should be here next week.
My thoughts are since the vacuum side of the fuel system was disconnected near tank (cut, fell off) and engine (vaccuum hose was out of Evap can) no telling how long it these were disconnected. Over time this non vacuum put a lot of strain on the pump causing it to wear down.
Thoughts?
http://www.amazon.com/gp/r.html?R=2H..._26725410_item
Should be here next week.
My thoughts are since the vacuum side of the fuel system was disconnected near tank (cut, fell off) and engine (vaccuum hose was out of Evap can) no telling how long it these were disconnected. Over time this non vacuum put a lot of strain on the pump causing it to wear down.
Thoughts?
Last edited by danjamesjr; 02-26-2014 at 08:42 AM.
#22
Senior Member
True Car Nut
evap side shouldnt have anything to do with the pump. you see what the pressure is with it running vacuum line disconnected? i had bad pressure regulator before new out of the box. it was a wells one and it gave me the wrong pressure. i had already replaced the pump though so i knew right off it was bad, took it back and got a delco one and it had the right pressure.
#24
Junior Member
Posts like a Ricer Type-R
Thread Starter
Join Date: Feb 2014
Posts: 19
Likes: 0
Received 0 Likes
on
0 Posts
evap side shouldnt have anything to do with the pump. you see what the pressure is with it running vacuum line disconnected? i had bad pressure regulator before new out of the box. it was a wells one and it gave me the wrong pressure. i had already replaced the pump though so i knew right off it was bad, took it back and got a delco one and it had the right pressure.
#26
Senior Member
True Car Nut
first of all, you know the engine is running lean due to the lack of fuel pressure, so revving it like that is a good way to melt your pistons.its not helping solve anything, you need to get the fuel pressure to proper spec. second the time i had the reg go bad it ran the same on mine too because the pressure with the old bad one was the same as the new bad one. try running it at idle for a second and pop the vac line off the reg, it should go up some let me know what you get
#28
Senior Member
True Car Nut
either the regulator is bad or the vacuum source for it. the needle should be going from like 45 to 35 back and forth and that one isnt moving at all. even if it was 23 it should go to 30 or so
#29
Junior Member
Posts like a Ricer Type-R
Thread Starter
Join Date: Feb 2014
Posts: 19
Likes: 0
Received 0 Likes
on
0 Posts
If I disconnected the vacuum on top of the regulator, it would bypass the vacuum system and should open the regulator?
If the fuel pump is faulty, it wouldn't fluctuate at all if it can't provide more pressure?
If the fuel pump is faulty, it wouldn't fluctuate at all if it can't provide more pressure?
#30
Senior Member
True Car Nut
possibly. not sure, i havent had any pumps go bad due to lack of pressure, most of the time here it goes out when its super cold
pretty good vid of what its supposed to look like
pretty good vid of what its supposed to look like