Question about 1997 Chevrolet C1500

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97 chevy pu 305 vortec, had cyl 6 misfire and rough idle, replaced fuel injector spider now engine starts but idle real high then dies

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  • Anonymous Mar 23, 2014

    My 97 Monte Carlo is not running right its rough idleing and no power wen I drive it I just recently had to change the tail shaft housing and the four spider gears in side it wat is going on

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  • Chevrolet Master
  • 540 Answers

Thats usually a sign of a vacuum leak, recheck and make sure you don't have any loose hoses, or cut intake seals

Posted on Nov 12, 2010

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Posted on Jan 02, 2017

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I have a 1996 GMC Jimmy that was iddling very rough and code said cylinder 2 misfire check engine light was on solid. Replaced all plugs, wires, cap and fuel filter 1st of March 2013. It ran better for a...


Lets start at the beginning. Did anyone check fuel pressure before and after replacing the pump ?
Has anyone checked the fuel pressure regulator and the injector spider ? The 4.3w engine uses a spider with one injector that supplies all 6 cylinders. And it runs at 65psi or more.

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My 2002 Chevy Blazer won't start?


If you replaced the injector after the plugsthey may be fuel fouled.Pull the plugs and clean them.(you can sandblast them,or use a method I used to use-shoot a little starting fluid on them and use a lighter to burn off the contamination of too much fuel).I can't believe GM kept using this stupid design so long-I remember nearly new Vortec V6s with this same problem in the '90s.

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My 97 chevy astro wont start when cold but well when i spray starting fluid in the intake ive changed every thing in the fuel system including the pump


what is the fuel pressure with key on and engine off? since you mentioned spider injector assembly it has to be a vortec engine that requires 55psi to open the poppet valve in the injectors just to start.

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1 Answer

Chevy vortec 305 misfire on # 6 cylinder


Could be 1 of 3 things sparkplug fouled,sparkplug wire or a faulty injector or injector wire connector has a poor connection.Also if this engine has 1 coil per cylinder then the coil for that cylinder could be faulty.

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My 01 chevy blazer will idle rough. it gives me error codes, p0300 and p0135 and p0141. where do i find these problems


Hello your po135 is o2 sensor bank 1 your po141 is O2 sensor bank 1 sensor 2 and your pO300 is random multiple cylinder misfire these problems are your oxygen sensors and engine misfire pO300 is you engine missing o2 sensors are switches in the exhaust system the engine misfires are the engines cylinders missing.

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Thanks Burkerobin & PC302001-- on 2000 Tundra V-8, 4,5 & 7 cyl. misfire. Find no distributor for this engine, reset engine light/retested. More info; Truck runs great while parked-revs/idles, put...


DO A LITTLE TUNE UP.CHANGE SPARK PLUGS.CHANGE FUEL FILTER.CLEAN FUEL INJECTORS.FILL FUEL TANK UP.AND ADD A BOTTLE OF FUEL INJECTOR CLEANER IN FUEL TANK.WHEN YOU DRIVE CAR AROUND.THE INJECTOR CLEANER WILL CLEAN OUT FUEL INJECTORS.IF CAR STILL RUN ROUGH IN DRIVE.YOU COULD HAVE INTAKE LEAK.

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1 Answer

Have code for cylinder #1 misfire on 96 chevy blazer engine runs rough at idle what do i need to do


these were bad for the spider injectors to fail. they are hard to diagnose with out the scan tool. the poppets in the end of the injectors get clogged and will need to be replaced. pull the plug and see if its oil fouled. they also have a problem with the #1 cyl getting out of round and oil fouling the plug. compare it to another plug in the engine. if its oil fouled the engine is no good.

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Know if my 95 chevy blazer has a spider CPI?


A spider injector is located underneath the intake plenum and this is multi-port. Otherwise you have a throttle body injector system. Vortec engines have spider injectors and they are super expensive to replace ($400.00- 850.00) each ! There is only one spider injector for each engine it has 6 legs/fuel tubes that go to each cylinder.

Oct 10, 2009 | 1995 Chevrolet Blazer

2 Answers

98 chevy 1500 4.3L vortec misfire problem


These have a real problem with the distributor caps, i would try that

Feb 18, 2009 | 1998 Chevrolet C1500

2 Answers

How to manually get a trouble code out of a 95 blazer with vortec


The vortec motor has been known for the so caller spider assembly which is the fuel injection set up inside the intake manifold going bad.The regulator starts leaking wich puts extra fuel into the motor.If that is it you should change the whole assembly.

Nov 30, 2008 | 1995 Chevrolet Blazer

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