1998 Ford Crown Victoria I asked a question about a mechani

JUNIOR2

MEMBER
1998 FORD CROWN VICTORIA

Engine Mechanical problem
1998 Ford Crown Victoria V8 Two Wheel Drive Automatic

You know I asked a mechanical question and did not receive any answer.I have given money to other sites and no one could help me figuire out the problem.I offered to make a donation if you can tell me whats wrong, But I dont want to keep throwing good money after bad money, Or as most people say in a hole.I am not big on replacing parts till the problem is repaired.I am a mechanic and very seldom do I get stumpped but I do just like every mechanic out there. We are only human. But I did notice that know on has even attempted to try to help me with my problem. Which brings me to beleive that no one is confident enough or trusting enough to believe I will make this donation if I am helped.I hope you can understand what I am saying. That I am tired of paying for no result information and if I keep going this way it would be cheaper to just buy another car.

5 Replies

BLUELIGHTNIN6

MECHANIC
16,542 POSTS

That is not at all the reason your question has not been attended to. If you look around our site, you will notice THOUSANDS of questions still needing an answer. There are only so many questions we can answer at a time as there are many times more people asking then there are answering.

So what is the trouble you are having and I will see if I can assist you with it?

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Tuesday, September 1st, 2009 AT 2:58 PM

JUNIOR2

MEMBER
7 POSTS

Ngine Mechanical problem
1998 Ford Crown Victoria police car 4.6 V8 Two Wheel Drive Automatic 98000 miles
First the 3rd and 4th cylinder have a miss so the car is running on 6 cylinders. The OBD 11 Shows no codes.
I checked the compression its consitent on all cylinders, checked fuel rail pressure very good, changed the injectors and tested them while out nice cone of fuel, new spark plugs, changed coils twice, cleaned fuel rail with a professional pressure cleaner and solution. Checked spark with tester ok. Pulled valve cover and changed lifters and push rods checked lobes on cam good, cranked motor valves opening and closing like they should but still missing on both cylinders. These cylinders as far as I can see have fuel and spark and good compression and still it has a miss. This car ran perfect then it ran out of gas and started missing. First it dropped 6 pushrods from gas gum but not on these cylinders I fixed all of them by cleaning and replacing push rods and making sure the valves were opening and closing correctly. If you have any idea let me know. Thanks Junior2 I will be glad to donate which I have done on other sites but they were unable to help me. You tell me how to fix it and I will be very happy to make a donation, thank you, junior

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Tuesday, September 1st, 2009 AT 4:32 PM

MHPAUTOS

MECHANIC
31,937 POSTS

Hi there,

Did you check the push rods for any slight bend, roll them on a sheet off glass this will show up any minor bend, I would also be checking the ignition on a dyno, if all other standard methods have not been successfully, its time to step up, I would think a 15 hot dyno run will pick up any ignition fault, and with the exhaust analyzer and live data with code check, you will have to find this problem.

Mark (mhpautos)

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Tuesday, September 1st, 2009 AT 10:00 PM

JUNIOR2

MEMBER
7 POSTS

I checked every push rod and lifter even though I bought them new.I learned a long time ago. When I built race cars, new dont mean thats its right or that the part even works. But all of the push rods are straight for sure. The coil is good and the spark plug is putting out a perfect spark and hot. I will try a few more things. And if nothing works I will go your route. No one in this area has a dyno but I will put it on one last resort. What are you thinking back in your mind to want to put it on a dyno anyway? I thank you for your time and I know this is no typical problem. Its strange to me. With good spark and fuel and good compression with the valves working correctly I dont know how this is even possible at all. At any RPM the motor wont hit its like pulling the wires off them two plugs. Thanks again if I figuire it out I will let you know what the problem was. Junior

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Tuesday, September 1st, 2009 AT 10:30 PM

MHPAUTOS

MECHANIC
31,937 POSTS

Hi there.

As you know, running the car on a dyno will simulate normal driving conditions while monitoring the electrical system under load, combined with the exhaust analyzer for my money there is no better way to nail any tune problem, with the dyno you can load up the engine which may trigger a coil or lead fault, being able to carefully watch the firing lines under load is the only way to pick up tricky tune problems, a good dyno operator will nail this in a very short time.

Mark (mhpautos)