Question about 1998 Chevrolet C2500

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Need firing order for a vortec engine in a 1998 Chev C2500 truck

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1998 Chevrolet C 2500 5.7 liter V-8 VIN "R"

need firing order for a vortec engine in a 1998 - 1fc87b4.gif


Hope this helps (remember rated and comment this).

Posted on Sep 07, 2010

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Firing oder on 1998 5.7 vortec and also on cap


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I am going by the '99-'06 Full size truck Chilton's Manual. The firing order should be the same. It is 1-6-5-4-3-2 on the v-6 engine. 1,3,5 are on the driver's side from grill to firewall and 2,4,6, are on the passenger's side from grill to firewall(this is in the heads). From the boot coming off the main coil(the only one not going to a spark plug) clockwise the firing order on the distributor is 5-1-3-2-4-6. Also make sure the plugs are gapped at .060 in. Hope this helps.

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this should be the cyliner order and firing order for it.

back of engine

5 6
3 4
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Engine runs extremely rough, seems to be fuel related, new fuel pump & filter installed, pressure good, run 2 bottles of injector cleaner through. Can't get to stay running under load. 1998, chev....


Have you changed the plugs, if any are fouled out or if any are worn, it takes more to fire it under load and may be spark knocking because one of the plugs can't fire off all the gas and cause it to skip or idle rough.

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Took plugs off distributer cap cant remember order


2.4L Engine
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Distributorless Ignition System

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Firing order: 1-2-3-4-5-6

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3.3L & 3.8L Engines

Firing order: 1-2-3-4-5-6
Distributorless Ignition System

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I need the torque specs and sequence on a 1998 chevy 350 vortec


Vortecs are a little different that old school small blocks, grab a Haynes or Chiltons, the cross patterns and specs are simply diagramed. Vortec, as any really, start with 25# then 45# and then final torque which I believe is around 70-75# but to be sure verify with the manual. AutoZones, Murry's, Adavance auto all carry the books, Cheap insurance.
Dan

Nov 19, 2008 | 1998 Chevrolet C2500

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