Backfire Sound Coming From Intake Manifold!!!???

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MyJayy

New Member

Mar 14, 2012

29

0

2

California

Aug 20, 2014

#1

• Aug 20, 2014

• #1

Hey guys!! My car has been making a backfire sound that's been coming from the intake manifold. Its been doing this for about 2 years now, never really paid attention to it. I just recently started hearing it more and louder, I did a compression test with the FORD programs that they have and my compression in all the cylinders are 100% except for 1, cylinder 7!!!!! it was at 90%?!!!?!? that's okay but if it exceeds higher than 15% then that's when it becomes a problem. I haven't tried taking a spark plug out, worried about breaking it in half and its the only car I have right now. NO CHECK ENGINE LIGHT, CAR RUNS PERFECT.
Has anyone experienced this problem?

 

earleys94gt

Active Member

Aug 31, 2003

1,223

16

49

Ashley, Ohio

Aug 20, 2014

#2

• Aug 20, 2014

• #2

What, if any, mods. do you have?

Have you checked your fuel pressure PSI?

 

M

MyJayy

New Member

Mar 14, 2012

29

0

2

California

Aug 22, 2014

#3

• Aug 22, 2014

• #3

earleys94gt said:

What, if any, mods. do you have?

Have you checked your fuel pressure PSI?

Click to expand...

The Mods I have one the car are; DIABLO SPORT TUNER& C&L COLD AIR INTAKE AND A BBK THROTTLE BODY.
I haven't, just today the car did not want to start. no clicking or anything. The dash kept saying low fuel, check charging system and check fuel cap. the car will crank but no start at times.
If it does turn over it will idle for a couple seconds then shut off. My car info : 2008 Mustang gt 3v 4.6 v8

 

retfr8flyr

Member

Jun 24, 2006

154

13

19

Aug 22, 2014

#4

• Aug 22, 2014

• #4

Bad battery.

 

Reactions: MyJayy

M

MyJayy

New Member

Mar 14, 2012

29

0

2

California

Aug 24, 2014

#5

• Aug 24, 2014

• #5

retfr8flyr said:

Bad battery.

Click to expand...

Think so? I have corrosion on the negative clamp, and the battery was leaking too now that I just realized that. I have to check that out tomorrow. Sorry for the late response! Thank you !