Ok ok.. just ran a compression test on all 4 cyls.
THis is my old 1984 Fiero 2m4 SE with the 2.5 liter Iron Duke.
Here is how it goes.
cyls are placed like this.
1-3-4-2
1 = 145 PSI
3 = 129 PSI
4 = 145 PSI
2 = 145 PSI
Ok, so obviously theres something up with Cyl #3.
Anyway, when I get in the car and start driving... the car shudders a little.. but it's very random.. totally sporatic.. like.. it will be studderning, then suddenly accelerate smooth as hell.. and then shudder again... and it makes a strange noise when it does this.
any ideas?
I'm guessing fuel pump maybe?
New plug wires, new spark plugs, new cap and rotor, new oil, new oil filter, new fuel filter.
Motor has 130 some thousand miles on it.
Thanks.
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Todd Jaspers
1997 Pontiac GrandAm SE
1987 Pontiac Fiero SE/V6
1984 Pontiac Fiero 2m4 SE
http://www.ezshots.com/album.cgi?82tafiero/Apartment