Question about 1999 Mercury Sable
The engine turns over.It was firing when i used starter fluid,but it wont fire now.The spark plugs are still working.Took one out and it tested good.Could it have lost compression?This all started when the weather got cold
If you sprayed something into the intake
I would assume you were checking for fuel
So is the fuel pump coming on?
Is the there fuel pressure at the rail on the motor?
You check for OBD Codes?
Look at any scan tool data?
Have injector Pulse or clicking?
Testing one spark plug is not a conclusive test of much
How was that test done?
You checked ALL Vehicle fuse?
Battery any good & was that tested?
Check cylinder leak down or compression at some point
Posted on Nov 21, 2014
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Posted on Jan 02, 2017
SOURCE: not firing right on no.4
First check plug and make sure the right plug for this vehicle,make sure that the heat rating for this plug is correct. Your problem could be a wrong heat rating plug been installed. Also make sure that the misfire is due to a bad plug and NOT a bad injector or injector wiring or uneven compression or even bad coil. Check injector wiring and make sure it not shorting or broken. To check injector pulse use a NOID light can be bought at almost any auto parts store like Auto-zone etc. Also compression can be checked with compression guage. A rule of thumb to go by is if any cylinder has more than 10 PSI in difference in compression there is a problem like a burnt valv etc. Here is a n example cyl# 1 170psi cyl#2 176 psi cyl#172psi cyl# 4 150 psi, there is a problem with cylinder # 4 and will cause a miss from cylinder #4. Good luck and thank for using FIX YA
Posted on Mar 26, 2009
For the 1991 Mercury Sable 3.8L V6:
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Posted on Apr 19, 2010
SOURCE: 1999 Mercury Sable. The
Check to see if your ground is connected real good where it attaches to the block. Have had this happen to me many times and it always gets me. It sounds like a dead battery or starter but it wasn't. Make sure the cable to the soleinoid is good as well as connections to it as well, they could be loose. As far as the owners manual, email me at firstname.lastname@example.org with your make model and year and I will be happy to email you a copy. No worries no cost. I hope this helps and good luck.
Posted on May 03, 2011
Testimonial: "Thanks! I will do as you suggested. I also found the owners manual at mercury web site. Thanks for your help!"
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