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1996 Geo Prizm ENGINE LACKS POWER

Tiny
GREGCLAVIER
  • MEMBER
  • 1996 GEO PRIZM
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 150,000 MILES
My car started to shake when I gave it gas, and has now power at all to get up to speed. I put no. 1 piston to top dead center and the rotor button was pointing to no. 1 plug wire on the distrib. Timming is ok right? The code it gives is PO302 wich says no.2 cyl miss fire. I changed the spark plugs and check for spark at all wires. Could I have a blocked exhaust. My next step is to check compression.
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Friday, January 23rd, 2009 AT 6:39 PM

1 Reply

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,549 POSTS
You followed the correct procedure for TDC#1.

You will have to check fuel pressure with a mecahnical gauge, and injector firing with a noid light.

It is also possible #2 has a bad plug or wire.

If CAT is clogged, you can unbolt it from exhaust pipe and visually inspect it for overheating.
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Saturday, January 24th, 2009 AT 8:10 AM

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