Question about 1990 Ford Bronco

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351w loss of power and smoke coming from valve covers

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Posted on Jan 02, 2017

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SOURCE: Will the valve covers for a 351W fit a 351C?

NO!

Posted on Jul 20, 2009

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2002 ford focus 2.0l sohc blowing white smoke and loud noise like a knocking from the bottom of the engine or/and rough idle,what could cause these


If a vehicle is smoking then it is obviously burning oil, loud noises from bottom of engine usually indicate main bearing failure, but that wouldn't usually make smoke are you sure it is from bottom of engine. Sounds more likely to me that you have either valve or piston problems, a valve seal gone would result in smoke as oil leaking into Cylinder chamber would burn producing smoke. Piston ring failure would also produce smoke and most likely a significant loss of power with possible noises resulting from broken pieces of ring in the cylinder impacting on head, this may have also unseated a valve causing the smoke. To check ring or valve failure you need to do a compression test, to check for bearing failure I am afraid it will require inspection either by removing sump pan ( oil pan) and removing bearing covers to check for damage.Whatever the cause it sounds as if it may be quite expensive and age and condition of vehicle should be taken into account, after all with the cheap cars on ebay it may be more cost effective to cut your losses and replace the vehicle.

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Ford transit 110 T280 I've back smoke on excellaration and loss of power on inclines; could it be the EGR valve at fault ; also have management warning light on.?


Needs piston rings. You have lost compression so you are losing power. The oil is getting pasty the worn rings and entering the combustion chamber which would explain the black smoke and loss of power.

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2012 kia sedona white smoke comes out of exhast when first started


White smoke is usually an indication of burning antifreeze and burning oil would have a more bluish tint to it and smell like burning oil. If it's a 2012, isn't it still covered by the KIA warranty though??

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Its sputtering and blowing smoke out of the tailpipe. whats the problem?


Hello! #1 question; Is the Check Engine Light (CEL) on? This means the computer has stored a fault and in order to troubleshoot the cause I'll need the code...Take the vehicle to an auto parts store and, for free, they will read the code...Send it to me...

If the CEL is not on; Pull the Positive Crankcase Ventilation (PCV) valve...Give it a shake...If you do not hear the little ball that lives inside rattling around; you have found the fault...Replace PCV valve...
See photo below...The PCV valve is located in the rear valve cover, just behind the throttle body

Guru...Saailer


saailer_222.jpgSTANDARD MOTOR PRODUCTS Part # V332
Cost $5

Oct 16, 2011 | 2001 Nissan Maxima

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Chevy Prizm or Toyota Corolla 2000 valve cover gasket problem? Right after oil change, engine check light came on & car started smoking & losing oil. I took out all 4 spark plugs: they were in very...


The valve cover gasket isn't hard to change. Oil on the plugs indicates a more serious problem. Smoke from the exhaust would be from rings, rich mixture, worn valve guides. It may be that the engine is overfull (that would show on the stick). Oil loss from a leaking gasket would smoke under the hood and leave oil on the engine and the ground.

Mar 25, 2011 | 2000 Chevrolet Prizm

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I have a 1990 f250 4x4 with a 5.8 351w, it seems as if the truck has a loss of power, even during everyday driving (not towing). Are there any chronic well known causes for this with this particular...


With that kind of mileage - I'd start with a good healthy tune up plugs, wires, etc... replace filters air, and especially FUEL filter then run a good fuel cleaner through it. The only chronic things about 351w is valves, if burned they will give "gutless" symptoms. They are notorious "carbon hogs" - joke between Ford mechanics, "if they could make intake runners any squarer they would"

Feb 21, 2011 | 1990 Ford F250

1 Answer

Smoke is coming out of the top of the engine where the oil is put in


This condition is caused by worn piston rings. The only cure is to rebuild the engine. You can reduce the problem a bit by making sure your PCV valve in the valve cover is working. This condition will also cause a loss of power and gas mileage. If you want to know how bad it has gotten, do a compression test on all cylinders. If you have more questions, please reply.

Sep 24, 2010 | 1986 Ford Bronco II

1 Answer

Poor acceleration and loss of power


If the engine mechanically is good ---no knocking or piton-slapping noises--chances are your engine breather system is plugged up.----possibly plugged up in the valve cover---the tube or hole where the PCV valve is located in the valve cover. check the PCV valve too --when you sake it you should hear it rattle.
To check the valve cover without taking it off --remove the PCV valve and with a piece of hose inserted in it's place inthe valve cover try blowing thru it---( with engine off ) if you can not then remove the valve cover and manually unplug the blockage.

Dec 28, 2009 | 2004 Toyota Corolla

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2002 2500hd 6.6 duramax diesel is blowing smoke and has loss of power. Is this the injectors or piston rings?


Bulletin No.: 03-06-02-005B
Date: November 18, 2004
TECHNICAL
Subject:
Engine Coolant Loss with No Visible Leaks (Reseal Injector Sleeve)

Some owners may comment on engine coolant loss with no visible leaks. Excessive white smoke or a coolant type odor coming from the exhaust pipe, along with low coolant levels, may indicate coolant in the combustion chamber.
Cause
Condition may be caused by engine coolant entering the cylinder due to a dirty or damaged seal between the fuel injector sleeve and the cylinder head.

If it's black smoke, you could have a faulty or dirty EGR valve and may not be closing 100%. Remove the EGR valve and clean it with spraying carb cleaner and reinstall after inspecting the valve can move without any binding. Goo luck and hope this helps.

Jun 25, 2009 | 2001 Chevrolet Silverado 2500HD

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