Question about Cadillac CTS

1 Answer

2004 cadillac cts. what happens to the motor if you use the wrong oil. could it possibly damage the oil pump or lifters/rockers?

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

  • Cadillac Master
  • 75,817 Answers

When u say wrong oil do u mean to heavy? the right oil for this engine is 5W20W or 5W30W, U can use 10W30W in hot climates but no heavier, back to your question, if u use the wrong weight oil here is what can happen, the engines crankshaft main and rod bearing can starve for oil, the reason is the clearances of these bearings is very tight, this is to make the engine last longer and be able to use the fuel saving light oils, the wrong weight oil can also starve the camshaft and lifters for oil but it is very unlikely the engine will suffer any permanent damage unless u ran this oil for a long time.

Posted on May 12, 2010

  • 3 more comments 
  • lfisher1983 May 12, 2010

    thank you, i purchased this car from a used dealer and have been having issues with it, the latest issue was there was a message on the dash saying OIL PRESSURE LOW STOP ENGINE and there was knocking also ,I had the car towed to the dealer and their mechanic looked at it and said the knocking was the lifters and that the reason for the message was because the oil wasn't getting to the motor, or something like that. He said that he had a feeling that when they had the car serviced at their mechanic (backyard mechanic) used the wrong oil, so I asked him how did he know for sure that's when he informed me that he just called the mechanic and the mechanic verified that yes, he did put the wrong oil in it, he told me that he had to drain the oil out and put new oil in, so when he did this he told me to drive the car home and by the time I had gotten home the knocking should stop and the message should clear. "WRONG" the message never cleared the knocking never went away the car was in their shop for 2-1/2 weeks only to be returned to me now with a check engine light on.

  • yadayada
    yadayada May 12, 2010

    You almost certainly have serious engine damage, have them fix it right or take the car back. As far as the weight of the oil being the problem i seriously doubt that, think they are giving u the run around and pulling reasons for the problem from a hat, this opinion is based on my 35 years as an automotive tech in 2 large dealers. I live in the USA if you have further questions u can call me at home 925-459-0571

  • yadayada
    yadayada May 12, 2010

    I will be at home for the next 30 minutes

  • agsutin garcia Apr 08, 2013

    hey Dennis, i have a 2007 cts with a 2.8L suddenly the check engine light came on one day and when i took it to the mechanic cylinders 2,4,6 were misfiring, in other words the whole left side if sitting in the drivers seat. i think about two months a go my mother confessed to having gotten the oil changed and using regular oil. if it were sensors it would mark a cam sensor or something right/? dosent. says the timing is off or something and a misfire in those cylinders any help?

  • yadayada
    yadayada Apr 08, 2013

    Does this engine have Variable Valve timing? If so try installing the correct oil, it the oil used was the right grade then you have an electronics issue like wiring or even a bad PCM control uni. Never change any parts on a problem like this unless it has been properly diagnosed.

×

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

I have a 2004 ford f150 making a tapping noies can it be the cam phasers going bad


check oil level ---yes it can but tapping noise can be a lot more reasons --worn oil -low oil pressure--low oil level--rocker loose-worn or damaged lifter-worn damaged valves --timing chain --water pump--pulley --really anything can cause a tapping noise --try to isolate the area or sound and diagnose problem

Sep 21, 2016 | 2004 Ford F150

6 Answers

Lifter is making loud tapping sound like rocker roller is hitting valve cover, and it squeals when I first start the car. This is a new reconditioned 455 pontiac trans am. 325 miles. is this serious or is...


here is the truth if the lifter is gone no adjustments can be done they will have to be changed it will not do serious harm it will just go tick tick louder and louder the lifter can do this beacuse of to things ,,,its worn out or the oil pump is not pumping the oil up right ,,,,,,

Jul 28, 2008 | Pontiac Firebird Cars & Trucks

1 Answer

Why is my second cylinder still misfiring if I done changed both coil packs and spark plugs on 03 Cadillac cts


clogged or poor fuel feed --burnt or damaged valve --collapsed lifter -flat spot cam -loose damaged rocker arm--or new parts defective

Aug 15, 2015 | Cadillac Cars & Trucks

1 Answer

2004 caddy cts timming belt broke and bent valves after repair it has lifter noise


You may have to check that the head gasket /s were properly positioned as the oil hole to the head/s may be blocked and not allowing oil to the lifters . If this is the case then on removing the cam shaft you may not be able to pass a small wire any further than the head thickness.

May 05, 2014 | Cars & Trucks

1 Answer

Motor knock sounds like rocker arms or lifters?


If your engine is knocking the sound with be at the bottom of your oil pan but if you have lifter or rocker arm problems the sound will be at the top of your engine. One other thing you said your car has 315k it might be time to change your oil pump.

Mar 25, 2013 | Chevrolet Silverado 2500HD Cars & Trucks

1 Answer

My 2005 cadillac cts makes a knocking noise when i step on the gas pedal, then stops when it reaches 5 mph


Hi there:
First check this information about "engine noses"...
ENGINE CLICKING NOISES
A clicking or tapping noise that gets louder when you rev the engine is probably "tappet" or upper valvetrain noise caused by one of several things: low oil pressure, excessive valve lash, or worn or damaged parts.

First, check the engine dipstick to see if the oil level is low. If low, add oil to bring it back up to the full mark. Is the engine still noisy? Check your oil pressure. A low gauge reading (or oil warning light) would indicate a serious internal engine problem that is preventing normal oil pressure from reaching the upper valvetrain components. The cause might be a worn or damaged oil pump, a clogged oil pump pickup screen or a plugged up oil filter. Using too thick a viscosity of motor oil during cold weather can also slow down the flow of oil to the upper valvetrain, causing noise and wear.

COLLAPSED LIFTER NOISE
Worn, leaky or dirty lifters can also cause valvetrain noise. If oil delivery is restricted to the lifters (plugged oil galley or low oil pressure), the lifters won't "pump up" to take up the normal slack in the valvetrain. A "collapsed" lifter will then allow excessive valve lash and noise.

VALVE LASH NOISE
If you can rule out lubrication-related problems as a cause, the next step would be to remove the valve cover(s) and check valve lash. On older import engines, mechanical lifters require periodic valve lash adjustments (typically every 30,000 miles). Too much space between the tips of the rocker arms and valve stems can make the valvetrain noisy -- and possibly cause accelerated wear of both parts.

To measure (and adjust) valve lash, you need a feeler gauge. The gauge is slid between the tip of the valve stem and rocker arm (or the cam follower or the cam itself on overhead cam engines) when the piston is at top dead center (valve fully closed). Refer to a manual for the specified lash and adjustment procedure. Also, note whether the lash spec is for a hot or cold engine (this makes a big difference!).

On engines with hydraulic lifters, oil pressure pumps up the lifters when the engine is running to maintain zero lash in the valvetrain. This results in quiet operation. So if the rocker arms are clattering, it tells you something is amiss (bad lifter or worn or damaged parts) or the rocker arms need adjusting.

DAMAGED ENGINE PARTS NOISE
Inspect the valvetrain components. Excessive wear on the ends of the rocker arms, cam followers (overhead cam engines) and/or valve stems can open up the valve lash and cause noise. So too can a bent pushrod or a broken valve spring.

RAPPING OR DEEP KNOCKING ENGINE SOUND
Usually bad news. A deep rapping noise from the engine is usually "rod knock," a condition brought on by extreme bearing wear or damage. If the rod bearings are worn or loose enough to make a dull, hammering noise, you're driving on borrowed time. Sooner or later one of the bearings will fail, and when it does one of two things will happen: the bearing will seize and lock up the engine, or it will attempt to seize and break a rod. Either way your engine will suffer major damage and have to be rebuilt or replaced.

Bearing noise is not unusual in high mileage engines as well as those that have been neglected and have not had the oil and filter changed regularly. It can also be caused by low oil pressure, using too light a viscosity oil, oil breakdown, dirty oil or dirt in the crankcase, excessive blowby from worn rings and/or cylinders (gasoline dilutes and thins the oil), incorrect engine assembly (bearings too loose), loose or broken connecting rod bolts, or abusive driving.

Bearing wear can be checked by dropping the oil pan and inspecting the rod and main bearings. If the bearings are badly worn, damaged or loose, replacing the bearings may buy you some time. But if the bearings are badly worn or damaged, the crankshaft will probably have to be resurfaced - which means a complete engine overhaul or replacing the engine is the vehicle is worth the expense.

ENGINE PINGS OR KNOCKS WHEN ACCELERATING
The cause here may be Spark Knock (Detonation) caused by an inoperative EGR valve, overadvanced ignition timing, engine overheating, carbon buildup in the combustion chambers, or low octane fuel.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Aug 22, 2012 | 2005 Cadillac CTS

1 Answer

Why is my engine knocking


Hi there:I suggest check this information about "engine noses"...
ENGINE CLICKING NOISES
A clicking or tapping noise that gets louder when you rev the engine is probably "tappet" or upper valvetrain noise caused by one of several things: low oil pressure, excessive valve lash, or worn or damaged parts.

First, check the engine dipstick to see if the oil level is low. If low, add oil to bring it back up to the full mark. Is the engine still noisy? Check your oil pressure. A low gauge reading (or oil warning light) would indicate a serious internal engine problem that is preventing normal oil pressure from reaching the upper valvetrain components. The cause might be a worn or damaged oil pump, a clogged oil pump pickup screen or a plugged up oil filter. Using too thick a viscosity of motor oil during cold weather can also slow down the flow of oil to the upper valvetrain, causing noise and wear.

COLLAPSED LIFTER NOISE
Worn, leaky or dirty lifters can also cause valvetrain noise. If oil delivery is restricted to the lifters (plugged oil galley or low oil pressure), the lifters won't "pump up" to take up the normal slack in the valvetrain. A "collapsed" lifter will then allow excessive valve lash and noise.

VALVE LASH NOISE
If you can rule out lubrication-related problems as a cause, the next step would be to remove the valve cover(s) and check valve lash. On older import engines, mechanical lifters require periodic valve lash adjustments (typically every 30,000 miles). Too much space between the tips of the rocker arms and valve stems can make the valvetrain noisy -- and possibly cause accelerated wear of both parts.

To measure (and adjust) valve lash, you need a feeler gauge. The gauge is slid between the tip of the valve stem and rocker arm (or the cam follower or the cam itself on overhead cam engines) when the piston is at top dead center (valve fully closed). Refer to a manual for the specified lash and adjustment procedure. Also, note whether the lash spec is for a hot or cold engine (this makes a big difference!).

On engines with hydraulic lifters, oil pressure pumps up the lifters when the engine is running to maintain zero lash in the valvetrain. This results in quiet operation. So if the rocker arms are clattering, it tells you something is amiss (bad lifter or worn or damaged parts) or the rocker arms need adjusting.

DAMAGED ENGINE PARTS NOISE
Inspect the valvetrain components. Excessive wear on the ends of the rocker arms, cam followers (overhead cam engines) and/or valve stems can open up the valve lash and cause noise. So too can a bent pushrod or a broken valve spring.

RAPPING OR DEEP KNOCKING ENGINE SOUND
Usually bad news. A deep rapping noise from the engine is usually "rod knock," a condition brought on by extreme bearing wear or damage. If the rod bearings are worn or loose enough to make a dull, hammering noise, you're driving on borrowed time. Sooner or later one of the bearings will fail, and when it does one of two things will happen: the bearing will seize and lock up the engine, or it will attempt to seize and break a rod. Either way your engine will suffer major damage and have to be rebuilt or replaced.

Bearing noise is not unusual in high mileage engines as well as those that have been neglected and have not had the oil and filter changed regularly. It can also be caused by low oil pressure, using too light a viscosity oil, oil breakdown, dirty oil or dirt in the crankcase, excessive blowby from worn rings and/or cylinders (gasoline dilutes and thins the oil), incorrect engine assembly (bearings too loose), loose or broken connecting rod bolts, or abusive driving.

Bearing wear can be checked by dropping the oil pan and inspecting the rod and main bearings. If the bearings are badly worn, damaged or loose, replacing the bearings may buy you some time. But if the bearings are badly worn or damaged, the crankshaft will probably have to be resurfaced - which means a complete engine overhaul or replacing the engine is the vehicle is worth the expense.

ENGINE PINGS OR KNOCKS WHEN ACCELERATING
The cause here may be Spark Knock (Detonation) caused by an inoperative EGR valve, overadvanced ignition timing, engine overheating, carbon buildup in the combustion chambers, or low octane fuel.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Apr 18, 2012 | 2004 Dodge Intrepid

1 Answer

My 2004 Cadillac cts ran low on oil to a small leak on the freeway, the car shut off as soon as the low oil light came on. I am sitting in a rest stop 250 miles from home. I walked a few miles in the rain...


You should be able to start, what is the fluid level bring it to the recommended level crank it allow the lifter to solidify and compression will build up

Jun 05, 2011 | 2004 Cadillac CTS

1 Answer

Have a lifter ticking noise in my 1996 buick regal. What does it take to repair the problem


The repair depends on the exact cause. Typically one of two things happens.

A lifter fails to "pump up" and looses pressure. Sometimes oil system cleaners can help this.

The other thing that happens is wear realted, called a collapsed lifter, this issue requires replacement of the camshaft and all lifters. I recommend against replacing only a collapsed lifter, as the cam lobe usually gets damaged, as the two parts are hardened and wear against one another (cam and lifter).

It is always possible to have a rocker arm come loose. The only way to know for sure is exploritory surgery.

Feb 05, 2011 | 1996 Buick Regal Olympic Gold

Not finding what you are looking for?

Open Questions:

Cars & Trucks Logo

Related Topics:

46 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cadillac Experts

yadayada
yadayada

Level 3 Expert

75807 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22133 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8172 Answers

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

Answer questions

Manuals & User Guides

Loading...