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May have not reconditioned the heads correctly may have a valve issues because the valve spring is bad or could be an injector or gaskets could be leaking on intake manifold could be a lot of different things that could have happened when they serviced the heads. Best thing to do is compression check find out the range for your compression to be at on the gague. That will tell you what’s possibly happening inside the engine. But you have to look in a chilton or haynes repair manual it will tell you what’s up when you read the compression testing gague.
P0301 Cylinder #1 misfire. First of all check Spark plug, plug wire, Compression in #1 cylinder and if all are fine then I would be looking at the fuel pump !
Once the tire is removed you need a set of HEX sockets with ratchet and a C-clamp to compress the cylinders with one old shoe between the clamp and cylinder.Hope this helps..........Make sure to apply energ brake and block rear wheels front and back.
You r going 2 need a book so u can get everything lined up.you will need 2 make sure the #1 cylinder is on compression then line everything up like the book shows.The best thing u could is go to DYI CHILTON.COM. $ 20.00 a year
Bank one is same side as #1 cylinder. Sensor #2 is after catalytic converter on exhaust. On 3.3L or 3.8L that's rear cylinder on backside on passenger side.
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