Question about 1998 Chevrolet K1500

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I got a 1998 chev 5.7 vortec i pulled the lower and upper manafolds now the upper does not wanna go on it goes into place but does not drop on flush with lower manafold have you seen this before?

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  • tim mcgrath May 11, 2010

    after putting new seals on coat them with oil then slide on lower manifold



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Yes you have to start with the back of the intake first and make sure the bolts on th ebottom line up kinda one side at a time.

Posted on Feb 05, 2010


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1 Answer

How do I remove and re install the CPI unit and gaskets on a 1998 Chevy Blazer with Vortec V6

You have to reove the upper plenum. that is the part on top of the intake that looks like a dome on top of the lower intake.There is 8 10mm bolts around the outside of the dome part. the disconnect the fuel lines at back of lower intake and remove the cpi unit.

Sep 12, 2014 | 1998 Chevrolet Blazer

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1998 chev blazer 4x4 4.3L vortec do i need to pull the engine to replace the transmission oil cooler lines?

Are you serious?
The answer is no. Please look things over before you ask a question.
The transmission cooler lines, last the life of the vehicle
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There is no parts avail for that. You have to make your own repairs.

Sep 19, 2010 | 1998 Chevrolet Blazer

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

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


Hope this helps (remember rated and comment this).

Sep 06, 2010 | 1998 Chevrolet C2500

2 Answers


Drop the drivebelt by swinging the tension-idler with a crescent wrench and popping the belt off the alternator pulley.

Dis-connect the battery.

Roll the electrical connection boot back to get access to the connectors and remove.

Back out the top mounting bolt (it may be stubborn, don't be afraid to put weight on it) and swing unit out to get easier access to the lower mount.
Drop the new unit in place and start the lower and upper mount the electricals...tighten the mounting bolts.
Swing the tension-idler to re-mount the belt.

re-connect the battery.

Apr 05, 2010 | 1998 Lexus ES 300

1 Answer

I have an intake leak where the 2 gas lines go into the intake, what would cause this and how do i repair it? the engine was recently removed and replaced if that helps and it is on a 1998 chev tahoe with...

you will have to remove upper intake plenum the black plastic part there is a o-ring around the area you are speaking of. now if this engine didn,t have the intake gaskets replaced before installing now would be good time because if you keep vehicle believe me you will have to do sooner or later these engines came with plastic intake gaskets that are notorious for leaking to do this you will njeed to remove both upper and lower intake manifolds I just started a job on 99 tahoe today before lunch and customer is driving tonight replaced upper and lower intake gaskets fel-pro makes updated gaskets for this engine that has thick metal shim and rubber gaskets a great improvement that ends this problem as for your vacuum leak at opening for fuel lines don,t see often but is possible hope this helps

Mar 29, 2010 | 1998 Chevrolet Tahoe

2 Answers

I have an 1998 chev pickup truck with a 4.3 vortec. I pulled the distributor to put intake gaskets on & I can not set the distributor right. Is there something I am doing wrong. Thanks Greg

You should be able to put it EXACTLY where it was when you pulled it out, if not you will need to line up the oil pump shaft and then drop it in. OR You will need to get #1 cyl TDC and then set the distributor rotor to number 1 cyl on the cap. If it does not go down all the way, the oil pump drive isnt lined up and you may need to line it up with a large screwdriver OR just put the dist in where it should go and then hold pressure down on it while someone spins the engine over until it drops into place. You cannot set the timing. The distributor will need to be set using a scanner and checking "CAM ******" it should be set to "0".

Nov 12, 2009 | 1998 Chevrolet C1500

1 Answer

I have a 1998 chev z71 350 Vortec with a blown transmission (push button 4x4) Can i take the transmission out of a 1997 gmc sierra 5.7 liter (Not vortec) (manual shift 4x4) and stick it in my 1998?

Yea as long as they are both manual transmissions everything will bolt up the same.If you use your old transfer case you will still have push button.

Oct 28, 2009 | GMC Sierra 1500 Cars & Trucks

1 Answer

My 95 4.3 vortec blazer wont idle after its warmed up

IAC(Idle air control) and or TPS(throttle position sensor)

Jul 21, 2009 | Chevrolet Blazer Cars & Trucks

1 Answer

1998 GMC Sierra- runs rough then stalls when

had this problem on my neighbors 98 chevy truck with the same engine !!
it turnd out too be the fuel pressure regulator,you have too pull the upper intake too replace it!!

Jun 04, 2009 | 1998 GMC Sierra

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