1997 lean condition

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Killer Ride

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Clogged cats will do that

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Edin

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I cleaned my injectors few weeks ago. And was totally dirty with some black things inside. And I don’t know when someone changed. I already make almost 40k km
I would like to check my cat’s. But guys told they don’t do back pressure just replacing stuff
Will see in Monday
 

Killer Ride

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I passed mine too with clogged cats. But no power. And if you let it go exhaust heat and gasses go back into the cylinders into crankcase. Also could heat up valve springs and weaken them causing way more damage

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1955moose

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Edin, you can do a temp test in, and out of each cat. Or you can buy the screw in back pressure gauge for around $30-40, and check it yourself. If you or previous owner had a misfire for any length of time, one or more of the convertors is clogged.

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Edin

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Edin, you can do a temp test in, and out of each cat. Or you can buy the screw in back pressure gauge for around $30-40, and check it yourself. If you or previous owner had a misfire for any length of time, one or more of the convertors is clogged.

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Yes Sometimes I need to crank few times to start engine. Gas mileage horrible. Up to hill horrible. When I driving js so hard acceleration specially under 2500 rpm. Temperature test is different exit of cat’s are cooler around 120f and 150f degrees
I try remove my O2 sensor is rusty I can remove just downstream O2
 

Edin

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First pic is end of the pipe
Second end of the exhaust muffler
Last pic is Y pipe
After driving

836AB9A7-CF4C-4CA9-B1C6-3AF849E48926.jpeg

2E5E15A5-3573-4A69-AF11-E09BDC238654.jpeg

76E4FB5F-FB48-4393-8774-93C0C4ABAEFE.jpeg
 

Killer Ride

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That's not where you take your readings from
Take it before the cat like right at exhaust manifold and right after the cats

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Killer Ride

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But the difference if I am understanding you correctly is the same as mine cats have both let loose and are now clogging the muffler.

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