Weird noise in exhaust

singlecamdude · Apr 6, 2011

The car was working fine, i decided to change my tensioner because it was going bad, while doing that i decided to clean the engine. when all the work was done the car a weird noise after changing plugs nothing happen, also when driving the car it evens out more or less after 3k rpm i need major help heres a link to see the video YouTube - Supercharged mustang gt 96 weird sound HELP ME!!!!! the motor is fully built and its 18 lbs supercharged

midnightdriver · Apr 7, 2011

18lbs of boost, i call That sounds like ricer numbers to me.

The noise, sounds like raw exhaust popping in the exhaust manifold.

Sonic04GT · Apr 7, 2011

midnightdriver said:
18lbs of boost, i call That sounds like ricer numbers to me.

The noise, sounds like raw exhaust popping in the exhaust manifold.

trinity_gt · Apr 7, 2011

18psi and no intercooler?

View attachment 192174

I agree with midnight: You've got raw fuel making it into the exhaust and combusting there. You might have water in the ignition coils, wires and/or connectors. What did you use to wash the engine?

Hard to tell from that vid but the engine doesn't sound very healthy either...

singlecamdude · Apr 7, 2011

No intercooler never had any issues till now and the car has been running perfect for a long time and it's not ricer number but we do have freedom of speech so say what u want I just need help with the car

singlecamdude · Apr 7, 2011

Well after the issue started I stopped driving the car for like two weeks and also replaced the ignition coils

trinity_gt · Apr 7, 2011

Use an automotive stethoscope (or equivalent) and make sure you hear all 8 injectors "ticking" at idle.

You might also want to do a compression test. You may have a burned exhaust valve.

Is the car running properly? You say it "evens out more or less after 3k rpm": Does it feel like it's running on 7 cylinders?

singlecamdude · Apr 7, 2011

Car was fine, after washing the engine is when it started to feel like if it was maf related but it's not I'll check the injectors when I get home today. I can just unplug one at a time right?

singlecamdude · Apr 7, 2011

Yeah and it kind of evens out at 3k when boost is creeping in

midnightdriver · Apr 7, 2011

singlecamdude said:
No intercooler never had any issues till now and the car has been running perfect for a long time and it's not ricer number but we do have freedom of speech so say what u want I just need help with the car

I call it a ricer number because 18lbs of boost sounds cool and if you were making 18lbs of boost you would be in the low 700 hp range, which you are not(dyno sheet need to prove it)

A non-intercooled setup like you have, running "18lbs" of boost, would be a blow torch into your engine. Do you know how high your ITA's would be? At least in the low 300's if not more. Stock N/A temps are around 120, 18 atmospheres with no cooling would be insane.

Why lie on the internet when asking for help? Makes no sense to me.

Have you scanned the computer for any issues?

singlecamdude · Apr 7, 2011

Am not talking about how much hp I have. am asking for help and am giving as much info about the car ok. I have no reason to prove anything to you, what is that show dyno sheet, who are you to ask me for that look when you come to Miami fl I'll show you and that's when I'll prove to you what it does.

RedondosTires · Apr 7, 2011

singlecamdude said:
Am not talking about how much hp I have. am asking for help and am giving as much info about the car ok. I have no reason to prove anything to you, what is that show dyno sheet, who are you to ask me for that look when you come to Miami fl I'll show you and that's when I'll prove to you what it does.

singlecamdude · Apr 7, 2011

U guys want pics I'll load you pics of everything just to "prove" to you guys I guess

singlecamdude · Apr 7, 2011

While disconnecting the injector plug on the car while it was on I think I found my issue that poping sound stop once I disconnect cylinder #1

Deleted member 38176 · Apr 7, 2011

Wow that engine sounds horrible. Hopefully you find out whats wrong.

Dark04GT · Apr 8, 2011

I believe him.... 14.7lbs of atmospheric pressure + 4lbs of boost = 18lbs total.

No methanol and no intercooler???? dyno sheet or

RedondosTires · Apr 8, 2011

Poor guy I really think he believes he's boosting 18

Maxpowers · Apr 8, 2011

Make sure you don't keep driving the car like this.

There is obviously gas getting into the exhaust and will destroy everything.

To simplify where to look, there is either no spark in a cylinder or a burnt/sticking valve.

singlecamdude · Apr 8, 2011

Am not driving the car at all it's been like a month more or less but I got new injectors today am going to put them on maybe today or tomorrow

singlecamdude · Apr 8, 2011

And by the way the car was 9 lbs and I up graded to 18 lbs I bought the pulley at Murrays speed and custom

Weird noise in exhaust

singlecamdude

New Member

midnightdriver

Active Member

Sonic04GT

Member

trinity_gt

singlecamdude

New Member

singlecamdude

New Member

trinity_gt

singlecamdude

New Member

singlecamdude

New Member

midnightdriver

Active Member

singlecamdude

New Member

RedondosTires

New Member

singlecamdude

New Member

singlecamdude

New Member

Deleted member 38176

Dark04GT

RedondosTires

New Member

Maxpowers

Member

singlecamdude

New Member

singlecamdude

New Member

Similar threads

Weird noise in exhaust

New Member

Active Member

Member

New Member

New Member

New Member

New Member

Active Member

New Member

New Member

New Member

New Member

Deleted member 38176

New Member

Member

New Member

New Member

Similar threads

Privacy & Transparency

Privacy & Transparency