Cadillac

Cadillac Repair Questions? Ask a Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Cadillac

Motor missing on #1 cylinder

Customer Question
motor missing on #1 cylinder
Submitted: 2 years ago.Category: Cadillac
Ask Your Own Cadillac Question
Answered in 2 minutes by:
10/16/2015
Cadillac Mechanic: Pete, Cadillac Technician replied 2 years ago
Pete
Pete, Cadillac Technician
Category: Cadillac
Satisfied Customers: 30,499
Experience: 17 years Cadillac experience as a technician.
Verified

Hi my name is ***** ***** I will be happy to help with this today.I need a little more info to assist better.

Did you have a compression test done at all to see if #1 cylinder is lower on compression then the rest of the cylinders?

Let me know so we can continue,thanks Pete.

Ask Your Own Cadillac Question
Customer reply replied 2 years ago
all were 150 psi
Customer reply replied 2 years ago
Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Live Phone Call. Let me know if you need more information, or send me the service offer(s) so we can proceed.
Cadillac Mechanic: Pete, Cadillac Technician replied 2 years ago

Is the #1 plug fouling with oil or fuel at all?

Ask Your Own Cadillac Question
Customer reply replied 2 years ago
no oil on it but some gas .....have changed injector, with another , changed coil with another ...still missing on #1
Cadillac Mechanic: Pete, Cadillac Technician replied 2 years ago

How about #7 spark plug does it look like it has been burning engine oil at all?

Ask Your Own Cadillac Question
Customer reply replied 2 years ago
no .......hooked to scanner went under miss fire data, only # ***** missing
Cadillac Mechanic: Pete, Cadillac Technician replied 2 years ago

There is a bulletin on a misfire on #1 and in some cases #7 cylinder.The bulletin number is ***** are two different causes:

Oil being pulled through the PCV system or oil spray that is discharged from the AFM pressure relief valve inside the crank case.If you inspect the build date on the drivers door sticker if it was built before February 1 2011 (02/01/11) an updated valve cover needs installed.If it was built after this date then the valve cover was already installed and does not need replaced.#1 is the old design and #2 is the new design https://www.dropbox.com/s/9fx7xu69ez8yu33/vav-10-16-15.gif?dl=0.This should be the left drivers side valve cover.The pistons need cleaned with upper engine and fuel injector cleaner in each cylinder (there is a special procedure for this).Then the engine oil pan needs removed to install a shield on the AFM valve as seen here.Link one is original and link 2 is the updated shield installed on it. https://www.dropbox.com/s/wg8uoont6vwrm0u/a-10-16-15.gif?dl=0, https://www.dropbox.com/s/nptqwf79ie6byh5/af-10-16-15.gif?dl=0.The afm shield only needs installed if this is an aluminum block and not cast iron.

With all that has been done here already to try and locate and repair the fault here I would look into this as the cause as this can cause what you experience here and does affect #1 cylinder.If this was already done let me know so we can continue.

If more help is needed, use the reply tab to continue our conversation. If no further assistance is needed, kindly rate my service.You can rate at any time and we can continue to work on your question as this will not close out your question.Keep in mind in some cases it can be difficult to fully diagnose or help repair your vehicle without seeing it and I work on delivering the best possible answer from what I see to work with.Thanks Pete.

Ask Your Own Cadillac Question
Ask Pete Your Own Question
Pete
Pete
Pete, Cadillac Technician
Category: Cadillac
Satisfied Customers: 30,499
30,499 Satisfied Customers
Experience: 17 years Cadillac experience as a technician.

Pete is online now

A new question is answered every 9 seconds

How JustAnswer works:

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

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:

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!!!!

AlexLos 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.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, 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.

EstherWoodstock, 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.

RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

Meet the Experts:

Jerry Newton

Jerry Newton

Cadillac Technician

1,569 satisfied customers

ASE Master Technician, L1, Master GM Technician. Over 20 years of bumper to bumper GM experience.

Dave Nova

Dave Nova

Cadillac Technician

1,522 satisfied customers

ASE Master Certification. GM World Class Certification

Gm Tech (Cam)

Gm Tech (Cam)

Cadillac Mechanic

1,003 satisfied customers

GM Grand Master Technician 2007. 14 years experience.

John

John

ASE Certified Technician

941 satisfied customers

ASE CERTIFICATIONS A1-A8 & L1 / 40 YEARS AUTOMOTIVE EXPERIENCE

George H.

George H.

ASE Certified Technician

775 satisfied customers

ASE Master Tech 15+ Years

Chris (aka- Moose)

Chris (aka- Moose)

Cadillac Technician

744 satisfied customers

16 years of experience

Don - Mo Lurch

Don - Mo Lurch

Cadillac Technician

690 satisfied customers

GM, Cadillac Cert., Heavy Line Mech, Race Shop Owner, Mobile Electronics.

< Previous | Next >

Related Cadillac Questions
I have a bad knock in my 09 cad engine that last for a mile
I have a bad knock in my 09 cad engine that last for a mile or so worse in cold weather. … read more
Gm Tech (Cam)
Gm Tech (Cam)
Cadillac Mechanic
Vocational, Technical or Trade Scho
1,003 satisfied customers
Need to replace the engine computer. How to programe it to
Hi need to replace the engine computer JA: Okay, I'll connect you to the mechanic to go over that information regarding your Cadillac. Before I do, is there anything else you want him to know? Custome… read more
roy
roy
Associate Degree
3 satisfied customers
I have a 1981 Sedan deville with the 368, 8-6-4 engine. The
I have a 1981 Sedan deville with the 368, 8-6-4 engine. The runs poorly with 1 fuel injector plugged in, and floods out immediately when I plug in the second injector. What's up with that ? … read more
Expert
Expert
15 satisfied customers
Today a service engine soon light came on on my 2005 Caddi
today a service engine soon light came on on my 2005 Caddi Deville … read more
Ron Z.
Ron Z.
Vocational, Technical or Trade Scho
2 satisfied customers
Service engine light soon light is on and blinking. Engine
service engine light soon light is on and blinking. Engine seems to be idling very roughly. … read more
Gm Tech (Cam)
Gm Tech (Cam)
Cadillac Mechanic
Vocational, Technical or Trade Scho
1,003 satisfied customers
Engine turns over & you got fuel & fire but will not start.
engine turns over & you got fuel & fire but will not start … read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
My check engine light came on and took it to a mechanic and
my check engine light came on and took it to a mechanic and put like 3 sensors on it.. but today they told me that the duel timing chains were out of sync... ? it drives fine to me, but they said that… read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
4,436 satisfied customers
2014 Cadillac ATS 2.0t, Loss of power, rough idle, engine
2014 Cadillac ATS 2.0t, Loss of power, rough idle, engine shutting off with codes P0011, P0016, P228C, P0171 … read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
4,436 satisfied customers
Check engine light was on, now alarms going off. Stays on
003 , but even though I just got a message from it the engine is hot the temp. Gauge is not showing it's over heating … read more
fordguy4u
fordguy4u
Automotive Tech
Vocational, Technical or Trade Scho
70 satisfied customers
After changing the thermostat it still reads engine coolant
after changing the thermostat it still reads engine coolant hot and the temp gauge moves into the red … read more
ggrote1
ggrote1
Vocational, Technical or Trade Scho
13 satisfied customers
My check engine and stabillatrak light are on the dashboard.
My check engine and stabillatrak light are on the dashboard. The transmission works in all gears but won't allow the car to do more than 27mph. Won't recognize sportier (manual)… read more
Pete
Pete
Cadillac Technician
30,499 satisfied customers
Service engine light keeps coming on (not check engine).
Service engine light keeps coming on (not check engine). What could this be? I had Meineke check it and they told me it was the computer. I had it replaced and the light still comes on. I replaced the… read more
eauto
eauto
self employed
High School or GED
74 satisfied customers
Bought low mileage 78 seville. Replaced fuel injectors,but I
Bought low mileage 78 seville . Replaced fuel injectors,but I have two of them leaking from top of injector where the fuel rail connectss. … read more
Pete
Pete
Cadillac Technician
30,499 satisfied customers
The engine of my 2006 cadillac cts was changed by an engine
the engine of my 2006 cadillac cts was changed by an engine of a 2008 cts the car worked very well for 11 months, a month later I had to try 2/3 to start the car, then it was not possible to turn it o… read more
Michael Solis
Michael Solis
363 satisfied customers
A knocking noise on the driver side of the engine. For a
a knocking noise on the driver side of the engine JA: Where exactly do you think the noise is coming from? And how long has this been going on? Customer: for a month sounds like in the bottom the engi… read more
Jerry Newton
Jerry Newton
Cadillac Technician
Vocational, Technical or Trade Scho
1,569 satisfied customers
I have a '86 Cadillac Cimarron 2.8 engine. Engine cranks and
I have a '86 Cadillac Cimarron 2.8 engine. Engine cranks and has a hard time starting. After it starts it idles rough and there is a bit of lost power. … read more
Dan
Dan
Auto Mechanics 1&2/diesel mech
0 satisfied customers
Last month i changed the fuel injectors on 92 Cadillac Sedan
last month i changed the fuel injectors on 92 Cadillac Sedan Deville. I was reved the motor quite high for a few mints. turned it off next time I went to start it . it did not even try too start No sp… read more
roy
roy
Associate Degree
3 satisfied customers
1 of my fuel injectors spray sometimes and sometimes it
1 of my fuel injectors spray sometimes and sometimes it don't is it my ecm … read more
heavy_chevy_396
heavy_chevy_396
Vocational, Technical or Trade Scho
2,518 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x