was this making me lose power?????

[Dark_5.0]

I have always had an annoying exhaust leak on my car and I always just thought that it was were the header hooks to the X-pipe.

There is a hole in the back of my passenger side head {a bolt hole} and that is where the air has been shooting out of (alot of air) I assume this is an old smog pump fitting I wouldnt know cause the pump was off when I bought the car. There is a hole in the in the other head to but it is plugged. As soon as I get a chance i am going to go and buy a plug and plug up the passenger side hole.

with that hole just shooting air out when the car is running does that mean that cylinder #4 had no compresion cause all of the air was shooting out of the hole or what.

Sorry for the length.



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88 mustang gt convertible bored to 306 BBk equal length headers, mac cold air fender kit, 3.73 FMS gears, Steeds Tri-ax shifter, Steeda underdrive pullies, Custom off road X-pipe, 2 chamber flow masters, cowl hood, nitto drag radials, ford racing clutch, 160* thermostat 16 degrees of timing electric fan off 94' t-bird jacobs electronics cap and wires. Edelbrock 1 1/2 inch drop springs. (Best E.T. 14.79@93mph @3000ft)

[fiveohpatrol]

no it has nothing to do with your compression, the only way to lose compression would be somthing wrong with the valve train or the piston/rings/cylinder.

you do need to plug up the hole in the back of the head asap, you are getting a massive exhaust leak and that is probably costing you a little HP, i wish i knew the bolt size off the top of my head, thats all you need to plug it up

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88 Notch, B&M Ripper, 3.73's, Ported E7's, Explorer int. w/ ported lower, pulleys, 1.7RR's, BBK headers, off-road H-pipe, flowmasters, subframes, 65mm TB, March ram air ,MSD coil, U/L control arms, 155lph f/p, Crane Adj.FPR, Nitto drag radials, best 1/4--> 13.76@101.4 on a 2.17 60ft

[Dark_5.0]

Originally posted by fiveohpatrol:
no it has nothing to do with your compression, the only way to lose compression would be somthing wrong with the valve train or the piston/rings/cylinder.

you do need to plug up the hole in the back of the head asap, you are getting a massive exhaust leak and that is probably costing you a little HP, i wish i knew the bolt size off the top of my head, thats all you need to plug it up

Thanks