Question about 1989 Chevrolet C1500

1 Answer

1989 chevy 350 automatic, white smoke

Starts and runs smooth, throttle up. runs rough and it puffs white smoke. Pulled all plugs, no water, doubt it is a head gasket. Could not get timing to set, way high before smooth idle. Replace timing chain, not get timing set to 10 btc, and runs rough. No check engine light, at a loss, no clue, and suggestions?

Posted by on

  • 3 more comments 
  • dismounted Nov 08, 2008

    only smokes on a random occassion, no set pattern. most often when you decellerate, and then for just a second or two. its not pure white, its more along the lines of a grey and sometimes a bluish tint. I have warmed it up and removed the radiator cap and the fluid does not spew or raise up and down as if being sucked out and air forced in. If I am going to do the heads, the engine is coming out or removing the hood and fenders. I am pretty handy with anything automotive, but these computers are a royal pain. When I bought this truck the guy had a jumper wire in the OBDII connector. I reset the computer by disconnecting the battery for a day, and it does not run as bad. Could all of this be because he ran it with the jumper wire in it and blew the computer?

  • bigteadybear Jan 14, 2009

    I have the same problem and it nomoraly stops with in a few sec of start up. I could be a leaking fuel injector after shut down the fuel injector will fill the engaine and make it run rich on start up. Check oil fill cap if there is sludge on the bottom of cap then the oil and anitfreze is mixing could be head gasket leaking

  • Anonymous Mar 14, 2014

    at idle the 2.0 1998 plymouth neon seems to have a engine miss.as soon as you give it any throttle the engine smooths out and runs fine.what could be the problem

  • Anonymous Mar 15, 2014

    engine also runs rough and quits when idled for long time.

  • Anonymous Mar 29, 2014

    idles rough when starting and blows smoke from the exaust then smooths out and runs fine

×

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 341 Answers

White smoke is antifreeze try checking the compression

Posted on Nov 08, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

1988 v8 318 4x4 ram charger starts and runs rough then puffs white smoke out of throttle body and dies what could cause this


Have you checked youre water level? White smoke can indicate water. May be headgasket. I would also dble check valv clearances and timing for tge rough running. 180° out of timing may be the rough running too.Just go through top to bottom your work. could be wires not in correct position.

May 16, 2016 | Cars & Trucks

1 Answer

502 Chevy crate. Big puff of white smoke at high rate of speed. Doing 70 mph and throttled up and white smoke blew out.


I'm not saying that you did, but white smoke usually indicates that you blew a head gasket or worse. White smoke is an indicator that coolant has entered the combustion chamber.

Dec 14, 2015 | Cars & Trucks

1 Answer

When ifirst start my 1989 chevy silverado it puffs white smoke


It's your valve seals... You start it get a big puff of white blue smoke than it goes away? ^^ idiots

May 25, 2012 | 1989 Chevrolet C1500

1 Answer

1989 Chevy K2500 350 will not restart after warmed up? I have replaced Heads, reset timing 0 TDC new plugs, coil, cap, button, module and pick up coil. Engine starts cold runs great but will not restart...


tdc is usually set at 8 degrees BTDC for an automatic and 4 BTDC for a manual transmission. This may help. Does the engine run rough at start up being set at 0TDC?

Oct 20, 2010 | 1988 Chevrolet K2500

1 Answer

97 f250 5.8L starts to run rough and puffs out thick black smoke. It comes and goes. Any ideas?


Exhaust problems. Black smoke=exhaust, blue smoke=oil, white smoke=water.

Aug 05, 2010 | 1997 Ford F250 SuperCab

1 Answer

Getting lots of white smoke and rough running till it warms up, just thinking if glow plugs if I can do it myself on 1989 ford diesel in an old ambulance we plan to resurrect


if you are going to resurect something that old,you might just as well start with the glow plugs ,easy job . and that is your problem,so your first diagnostic was good. it isnt hard, if you get into strife yell out .

Dec 08, 2009 | 1989 Ford F 350

2 Answers

1997 chev 1500 with 350 vortec milky oil in dipstick tube


You have a blown head gasket.Water in the fuel.This is a classic sign of engine damage.

Jul 27, 2009 | 1997 Chevrolet K1500

2 Answers

89 chevy s10 blazer puff smoke out tailpipe when 1st started


A puff of smoke when you start up indicates worn valve seals.That's why all your work didn't fix the problem and it doesn't show a code. It's a pain in the --- job that requires some specialized tools so I guess it depends on how bad it bugs you,if oyu want to fix it.

Jul 13, 2009 | 1989 Chevrolet S-10 Blazer

2 Answers

When truck gets warm it will not run over 45 mph


Puffing white smoke is a sign of a blown head gasket. Coolant is getting into the cylinders.

Feb 17, 2009 | 1999 Ford F350 Regular Cab

1 Answer

1989 350 runs rough for a while after ineling


have the converter checked it may be partially clogged

Jan 29, 2009 | 1989 Chevrolet Suburban

Not finding what you are looking for?
Cars & Trucks Logo

1,270 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

61037 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6812 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...