How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Mike S. Your Own Question

Mike S.
Mike S., Chevy Mechanic
Category: Chevy
Satisfied Customers: 5060
Experience:  ASE Certified Master Technician
20625509
Type Your Chevy Question Here...
Mike S. is online now
A new question is answered every 9 seconds

if an engine is vapor locked how do i fix it

Resolved Question:

if an engine is vapor locked how do i fix it
Submitted: 3 years ago.
Category: Chevy
Expert:  Mike S. replied 3 years ago.

Fuel vapor lock is really a thing of the past when mechanical fuel pumps on the engine use to use vacuum to draw fuel from the tank. It was caused by extreme heat on the fuel lines either by fuel lines running too close to exhaust manifolds or any other cause for the line to get too hot.

The chance of vapor lock was most likely all but eliminated when the fuel pumps were installed inside the tanks, because the fuel is pushed out instead of being sucked out, therefore eliminating the chance of vapor lock. That is not to say it cannot happen.

Usually, you would put a partially frozen wet towel on the fuel line and mechanical fuel pump.

Have you tried to start the vehicle with starting fluid? Perhaps the fuel pump is just not coming on, can you hear it run when you first turn the key to run for the first few seconds? If not check the fuel pump fuse first.

Customer: replied 3 years ago.
yes i have tried to start it and the fuel pump comes on and there is fuel in the fuel rail but the engine trys to turn over but wont and cant figure out why
Expert:  Mike S. replied 3 years ago.
Do you have spark?
Customer: replied 3 years ago.

i just tried to start it agian and all it does is make a clicking sound down by the starter the starter is new how do you check to see if there is spark

 

 

Expert:  Mike S. replied 3 years ago.

Well, first of all the starter is going to have to crank the engine before you can test for spark. Is the battery going dead? If so charge it then get back to me when it cranks. To test for spark when it cranks make a tester with a spark plug.

You can make a test plug with a new spark plug and some wire, a mini hose clamp and an alligator clip. First open the spark plug gap to around 0.075” and strip both ends of a 16 gauge wire about 4 foot in length. Attach the mini hose clamp around the threads of the spark plug cause that is a ground and secure it with the mini hose clamp with the bare wire end in between to make a good connection. Next, take the other end of wire and secure to an alligator clip.
Now, you have a test plug. Remove any spark plug boot you want and insert your test plug onto the spark plug wire end you just pulled off and ground the alligator clip. Lay the spark plug in some shade somewhere under that hood and then crank the engine and look for spark. It should crackle with sound and should be blue but red is ok, orange is a little weak. If it can jump that 0.075” gap you should have no problem igniting an engine.
You can also use that to check coils on some vehicles.
graphic

Customer: replied 3 years ago.
the battery is fully charged ive hooked the charger up to it and turned it to boost and it still makes a clicking sound at the starter
Expert:  Mike S. replied 3 years ago.
Check the connections at the starter, if they are tight then the starter may be bad. take it off and take it into an auto-parts store, they will usually bench test them for free.
Customer: replied 3 years ago.

ok if its good what else could it be

 

Expert:  Mike S. replied 3 years ago.
Well, if the battery is charged like you say and the starter is obviously getting voltage to the solenoid because it is clicking, the only thing it could be is the connections are loose on the starter or the starter bolts are loose cause that is how it is grounded. If everything checks out then the starter is most likely bad. The brushes wear out or the bushings, or an open in the wiring.
Mike S., Chevy Mechanic
Category: Chevy
Satisfied Customers: 5060
Experience: ASE Certified Master Technician
Mike S. and 4 other Chevy Specialists are ready to help you

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • I was having a terrible problem with the wheel bearings on my 98 Chevy Cavalier and I suspect that using this website saved me plenty of time and money. Todd L Rochester NY
< Last | Next >
  • I was having a terrible problem with the wheel bearings on my 98 Chevy Cavalier and I suspect that using this website saved me plenty of time and money. Todd L Rochester NY
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
  • Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know. Robin Elkton, Maryland
 
 
 

Meet The Experts:

 
 
 
  • Tim's Auto Repair

    mechanic

    Satisfied Customers:

    7641
    Have owned a repair shop for 25 yrs.
< Last | Next >
  • http://ww2.justanswer.com/uploads/TI/tim37857/2011-10-28_23053_S6301814.64x64.JPG Tim's Auto Repair's Avatar

    Tim's Auto Repair

    mechanic

    Satisfied Customers:

    7641
    Have owned a repair shop for 25 yrs.
  • http://ww2.justanswer.com/uploads/DT/dt69nova/2012-6-15_234154_pic1.64x64.jpg Dave Nova's Avatar

    Dave Nova

    Chevrolet Technician

    Satisfied Customers:

    6870
    ASE Master Certification. GM World Class Certification
  • http://ww2.justanswer.com/uploads/ggrote1/2009-06-27_031011_me.jpg Gary's Avatar

    Gary

    Chevy Technician

    Satisfied Customers:

    5404
    15 years GM master tech
  • http://ww2.justanswer.com/uploads/testedtuff/2009-09-26_170108_pictures.jpg John's Avatar

    John

    Master A.S.E Automotive technician

    Satisfied Customers:

    4071
    A.S.E MasterTechnician A1-A8 w/L1,38 years experience General Motors Master Technician
  • http://ww2.justanswer.com/uploads/RO/rodcuda/2011-7-25_224114_Donhoff1.64x64.JPG Neal's Avatar

    Neal

    Chevy Mechanic

    Satisfied Customers:

    2306
    Shop Owner and Mechanic on multiple makes.
  • http://ww2.justanswer.com/uploads/goodwrench9124/2008-11-09_220838_dscf0007.jpg goodwrench9124's Avatar

    goodwrench9124

    ASE Certified Technician

    Satisfied Customers:

    2041
    Ase Master Certified, GM Master Certified Tech. Awarded GM Top performer, Hybrid certified
  • http://ww2.justanswer.com/uploads/DR/drivefast1971/2012-1-12_172422_0009051tQKh.64x64.jpg Ron Z.'s Avatar

    Ron Z.

    - Chevy Tech -

    Satisfied Customers:

    1912
    18+yrs experience. State Inspector and Chevy Diagnostics