[ceaser]

i have a 94 mustang GT convertible all black inside and out side 5-speed with the following MODs.

bassani - headers equal lenth
bassani - x-pipe with cats
bassani - cat back system
holley - 190 lph pump
msd - blaster coil
C&L - 76mm full kit
hi-flow aluminum water pump
thremostat- 180
BBK - aluminum pulley's - no alt pulley to slow
cobra 94-95 - gauge cluster white face 160 mph
automatic to 5-speed swap with computer
UPR - aluminum shifter
upr- adj clutch kit
ram - clutch
SALEEN - struts
SALEEN - shocks
SALEEN - springs 1 1/2 in. drop
SALEEN - rear lower control arms
SALEEN - 18 in. chrome rims
SALEEN - plug wires 8mm
ground punder - adj. pump steer kit - tie rods
off set steer/ rack bushing

ok on with my engine noise problem!

start up if fine
idles good
when i'm in neutral i rev the engine to 3,000-4,000-4,600 but no noise at all
only when i'm driving and pressing gas pedal i here a loud noise from engine block!

when i am driving and i let go of the gas pedal i don't hear a noise !

they said it might be my headers but i retighten them till my nuckles bleed!

the sound it's making is a tuck , tuck ,tuck, tuck ,tuck , tuck noise !

like a constent pinging noise but deeper and louder so loud that the car next to you can hear it !

what could it be ??????????????????
1. valves
2. rockers
3. springs
4. pistons
5. timing chain out of balance


please help with this horrible engine noise !

i have change the folloing
spark plugs,wires , iat sensor, o2 sensors, ect sensor, egr valve sensor


please , help !

thanks

ceaser

It could still be an exhaust leak. You can tighten till your blue in the balls but if the gasket is blown it won't help.

It is just really hard to describe a noise. You need to get some other people to listen to it. When I have a noise that I am trying to isolate, I have a section of garden hose about 3 feet long. I put one end to my ear and probe with the other end. You will here it when you are close to the source.

[ceaser]

stage 8 locking header bolts

but i have retighten 1st week after header install , 2nd week , and 3rd week!

it sounds like it coming from the heads cylinders 3, 4

i check with a holes already !

thanks

ceaser

[Vortex]

does it soundl like pinging? as in: not enough fuel octane, not enough fuel burning, timing advanced too far, timing chain too slack, something along those lines?
a tap tap could also be in the top end... valves, lifters etc... two possible cheap fixes.. run a fuel injector cleaner that cleans carbon off of valves, run lucas oil treatment in and if it quiets up its in the valvetrain.

[Fast1]

I agrree w/ ol adam on this one sounds like detonation to me

[Mack Daddy]

I thought I threw a rod once...turned out to be detonation... (I'm a Slow Learner)

[spyder]

i see you put a 76 mm MAF in there without changing injectors , perhaps could be inproper fuel/air ratio causing problems in various cylinders when the engine is working/pulling. the stock MAF is good up to 350 HP, why'd you replace it with such a bulky one? That wuold be my guess as to your noise. sounds like detonation being caused. or in the worst case, a rod.

[electrobe]

I bought a 94gt about 3 months ago. I thought it had a header leak. But when I pulled off the altenator there was the problem. A bolt was missing that screwed into the head. It went thru the altenator into the head. Its some kind of smog hole or something. But it was letting exhaust out of the front of the head.Blowing it into the back of the altenator. Pluged it and the problem was fixed. It made a sound like what your talking about. Good luck

[onefaststang]

was sup man, im new to this,so was sup all my fellow stang owners, i have a 1994 mustang gt convertible with an aode.i recently had the same problem on my car.every morning when i start my car a strange pucking noise would come off the engine compartment.i thought it was a header leak,so i retight them until i busted one of my balls,lol, anyways i later found out it was my egr tube.cracked somehow, and it was leaking,so i blocked it off, ever since the noise has been gone.hope this help............... 1994 blk. stang gt convertible,99'gt 17 in chrome wheels,apc projector headlights,harwood 3 in.saleen hood(aode with custom shift kit)factory 302 block.,gt-40p heads,frpp roller rockers,frpp e-303cam,roush intake(upper and lower)65mm bbk t.body,c&l alum.tube,pro-m meter with filtercharger,march pulleys,highflow waterpump,msd ignitionsetup,accel wires and plugs,bbk unequal headers,bassani x-pipe,borla mufflers and tips,3.73 gears,aluminum driveshaft,155 lph fuel pump,24 lb,injectors,and the best damn thing money can buy............................................150 shot of tnt nitrous setup...........