Guys I have a 1986 lx 3.8 it is smoking white smoke

25

Asked by Jun 07, 2013 at 08:27 PM about the 1986 Ford Mustang LX Convertible

Question type: Maintenance & Repair

Guys,
I am at a loss, I purchased a 1986 mustang 3.8 lx convertible.It smoked under load.
I replaced the heads all gaskets and ran a pressure test and compression test (all Good)
Started engine ran perfectly except for the white smoke.Can you help? Thanks

5 Answers

237,435

Probably your piston rings are shot if in fact the engine got too hot from your head gasket leak. But your compression numbers were good? hmmmm. One way to check if they are bad is when the engine is running, take off the oil filler cap and there will be a huge gush of air flowing out at you. Using thicker oil might be a temp. solution in your case.

1 of 1 people found this helpful.
92,825

How long did you let the engine run? I am thinking that maybe the catalysts might have coolant in them, if that is the case then it will take quite a while to get it burned out of them. Also be aware that the O2 sensors might just give up they don't like coolant in the exhaust.

1 of 1 people found this helpful.
24,215

Ya know, these guys covered it well but the first thing that came to my mind is a blown out diaphragm on a fuel pressure regulator. Easy to check - pull the vacuum line on the regulator and see if any gasoline comes out of the vacuum line. DO NOT DO IT WITH A RUNNING ENGINE! If it is blown, there will be a considerable amount of gasoline present - you can't miss it. Way too much fuel will smoke white like that too.

1 of 1 people found this helpful.
25

THANKS GUYS FOR YOUR HELP

Have you tried letting of the gas , maybe getting rid of the racing slicks ???

Your Answer

Add photo

Related Questions

  • 1986 Mustang atf leakage 23 answers

    I have a 1986 Mustang 3.8 L LX that smokes , the smoke is white,I have changed everything within the engine to correct this to no avail.Some body mentioned to me that it could be the front transmissi...

    1986 Ford Mustang LX Convertible

    -

    Maintenance & Repair

  • 1986 mustang lx hatchback 2.3l non turbo ATF low on fluid / white smoke 2 answers

    I have a 198x mustang lx hatchback with the 2.3l 4 cylinder. The A/C system has been removed by a previous owner. I have noticed that every few days, my transmission fluid has been going down, and I h...

    1986 Ford Mustang LX Hatchback

    -

    Maintenance & Repair

  • 1986 mustang lx 3.8l 4 answers

    Guys, This is the second question i have asked concerning the white smoke under load on this vehicle.I appreciate the previous answers but I tried all the tests that where offered and none proved to ...

    1986 Ford Mustang LX Convertible

    -

    Maintenance & Repair

  • My exhaust pipes smoking 4 answers

    I have a 2001 mustang and my exhaust pipes r smoking & it feels lik my engine is jumpin plus I Got a lil oil leak my shop is on the nw side I'm located on the se side is still safe to drive it sto...

    Ford Mustang

    -

    Maintenance & Repair

  • have a lot of white smoke on f250 super duty why? john 2 answers

    have a lot of white smoke cant drive to much smoke help? thanks

    2005 Ford F-250 Super Duty Lariat 4WD Crew Cab SB

    -

    Maintenance & Repair

Mustang

Looking for a Used Mustang in your area?

CarGurus has 45,735 nationwide Mustang listings starting at $1,999.

ZIP:

Search Ford Mustang Questions

Ford Mustang Experts

#1 Tom Demyan
Tom Demyan
Reputation 4,270
#2 Bob Beaman
Bob Beaman
Reputation 1,210
#3 COMETGUY61
COMETGUY61
Reputation 1,060
View All

Related Models For Sale

Used Chevrolet Camaro
226 Great Deals out of 30,943 listings starting at $1,217
Used Dodge Charger
405 Great Deals out of 28,172 listings starting at $1,988
Used Chevrolet Corvette
120 Great Deals out of 20,753 listings starting at $3,000
Used Ford F-150
2,198 Great Deals out of 206,316 listings starting at $1,499
Used BMW 3 Series
977 Great Deals out of 31,730 listings starting at $1,000
Used Jeep Wrangler
277 Great Deals out of 18,163 listings starting at $2,950
Used Honda Civic
656 Great Deals out of 88,604 listings starting at $995
Used BMW M3
45 Great Deals out of 1,517 listings starting at $5,800

Used Cars For Sale

2017 Ford Mustang For Sale
32 Great Deals out of 23,103 listings starting at $18,779
2016 Ford Mustang For Sale
158 Great Deals out of 5,276 listings starting at $16,991
2015 Ford Mustang For Sale
57 Great Deals out of 3,525 listings starting at $13,988
2014 Ford Mustang For Sale
51 Great Deals out of 3,152 listings starting at $9,000

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.