Weak Fuel PUMP - Confirmation?

[93buicklesabrelmtd]

Ok. I felt this problem sneaking up on me for the past year.
Ocassionally I can start her, I hear a quick sputter, that only last 4 seconds. Then she idles perfect. It did this on 2 out of 10 starts. Not noticeble at all. That happened for almost a year.

This week, I was driving, gave it gas, and she acted like she was empty. I had 1/4 tank. Filled to half, and she acted little better.

I can be driving with the rpm around 2 1/2 give it a moderate gas, and she staying the same rpm. I floor it, she kicks a little (like empty/ slight miss) builds up, then is gone.

I also notice, that, she now doesnt like climbing past 2 1/2 rpm.
Two days ago she didnt like going past 3rpm.

This car easily can get to 70mph without hittin 3rpm.

With the begin of this problem this week, I also notice a slightly rough Idle, not as smooth as normal!!!!!

I already bought a new fuel pump and sock. Its actually in the trunk of the car.

Just wanted to confirm that it is the pump. Even though Im 90% sure it is.

Will a weak fuel pump make my car idle rough?


My car is well maintained:
ac delco plug, wires: 10K

[LeSabre97mint]

Originally Posted by 93buicklesabrelmtd

Ok. I felt this problem sneaking up on me for the past year.
Ocassionally I can start her, I hear a quick sputter, that only last 4 seconds. Then she idles perfect. It did this on 2 out of 10 starts. Not noticeble at all. That happened for almost a year.

This week, I was driving, gave it gas, and she acted like she was empty. I had 1/4 tank. Filled to half, and she acted little better.

I can be driving with the rpm around 2 1/2 give it a moderate gas, and she staying the same rpm. I floor it, she kicks a little (like empty/ slight miss) builds up, then is gone.

I also notice, that, she now doesnt like climbing past 2 1/2 rpm.
Two days ago she didnt like going past 3rpm.

This car easily can get to 70mph without hittin 3rpm.

With the begin of this problem this week, I also notice a slightly rough Idle, not as smooth as normal!!!!!

I already bought a new fuel pump and sock. Its actually in the trunk of the car.

Just wanted to confirm that it is the pump. Even though Im 90% sure it is.

Will a weak fuel pump make my car idle rough?


My car is well maintained:
ac delco plug, wires: 10K

Get a fuel psi gauage and test the fuel psi.

Dan

[93buicklesabrelmtd]

Originally Posted by LeSabre97mint

Get a fuel psi gauage and test the fuel psi.

Dan

Psi dropped off immediatly after ignition turning off. Psi of 30
New pump installed with new sock. PSI stays at range when ignition turned off. 45-50 psi.

Car has alot of power now. But after replacing pump and sock, a slight miss is there. I replaced the wires with new ones and its slightly better but still there.

Mechanic told me that plugs are not gapped properly is what he thinks. I thought that the AC delco plugs came already gapped? So i didnt gapped them. Im going to check to see if its gapped at 60. I think thats what the Buicks call for.

[auto trainy]

Did you replace the wires with AC delco?Iwould check the connections of the wires to the plugs ,Also check for a vacuum leak.Good Luck

[93buicklesabrelmtd]

Originally Posted by auto trainy

Did you replace the wires with AC delco?Iwould check the connections of the wires to the plugs ,Also check for a vacuum leak.Good Luck

Wires good. Plugs were fouled. Got the new Platinum Delcos. I was going to get the Delco Rappid Fires. She runs great now. Thanks

ACDELCO
Rappid Fire: $14 Gold
Platinum: $6 Silver
Regular: $1.70 Red