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truegraw
11-28-2015, 01:41 PM
just checked all the cylinders and around 150 on all except no 6 (it was around 60). plug looked burnt doubt it was firing. is there anything i can do to maybe help the car last a little while longer since its almost Christmas and i will be low on cash? can i run air in the cylinder to see if its a valve or ring? car has 145k on it. any help would be appreciated

Ourobos
11-28-2015, 02:04 PM
Does it have a miss or any symptoms when driving?

JimP
11-28-2015, 02:26 PM
He had a bad misfire, there was a previous thread. In addition to replacing the plug, you should check the valve springs, maybe you'll get lucky and its not ring related.

Remove that valve cover and have a look, it's possible to have a bad spring, weak or broken. Hopefully no valves are bent. I'd start there and report back.

Jim

truegraw
11-28-2015, 02:40 PM
not to familiar with these engines, where exactly do i need to look after removing the valve cover and will it be obvious?would i be better off just taking it somewhere and biting the bullet

Marauderjack
11-28-2015, 02:46 PM
Take it to someone who knows these engines!! :beer:

A broken valve spring is not likely but a valve seat is highly possible!!:(

Good Luck!!:up:

truegraw
11-28-2015, 03:36 PM
ok so i need to let em know i got low compression in #6, wish i had a leakdown tester to know if it was the head or rings. worse case if it is the rings rebuild or rebuy?

jflave
11-28-2015, 03:37 PM
Did someone say MO knows these motors. :)

Turbov6Bryan
11-28-2015, 04:30 PM
ok so i need to let em know i got low compression in #6, wish i had a leakdown tester to know if it was the head or rings. worse case if it is the rings rebuild or rebuy?

Use compressed air, (Like doing valve springs on a car without taking the heads off) and when the valves are closed listen where the air escapes to.

If the air comes up through the t body. It's intake valve, valve mating surface ect
If it comes out the tail pipes ( clip a Kleenex to the pipes?) exhaust valves , mating surface or severe carbon build up. I've seen carbon build up enough to hang a valve, I used compressed air to air up the cylinder, piston at tdc and smacked the valve and it released the carbon allowing the valve to seat

But if you don't get either, then see if you get serious amount of blow bye, literally the air should come out your breathers or holes in the valve covers. This will lead you to broken ring land or stuck ring from overheating

If you don't want to mess with any of this, start using sea foam to release carbon build up and use Gm top engine cleaner, there's a process to doing the GM top engine cleaner. This will soften that carbon, it makes a smoke show
Imagine what your spark plug looked like, that's what the valves will look like in that cylinder.

truegraw
11-28-2015, 07:34 PM
so i need to find tdc and then put some air pressure to the cylinder? might as well give it a try. can i buy the top end cleaner at local parts store? wheres the best place to put it in at?

Turbov6Bryan
11-28-2015, 10:14 PM
Gm top engine cleaner at GM dealer, google how to use it. I use a intake manifold vacuum hose.
Sea foam at parts store
Yes I would start at 50 psi and pull the spark plug, get a hose with spark plug threads and o ring same place you buy sea foam at. This will get you some direction where your issue is

Let's hope it's carbon

Finally
11-29-2015, 08:43 AM
ok so i need to let em know i got low compression in #6, wish i had a leakdown tester to know if it was the head or rings. worse case if it is the rings rebuild or rebuy?

Go old school on it,squirt some oil in the low cyl,if it goes up its rings if it stays down its the valve or seat.

truegraw
12-05-2015, 05:44 PM
so is having the heads redone @ 145k even worth it or should i look into changing the engine all together?

Turbov6Bryan
12-05-2015, 06:01 PM
so is having the heads redone @ 145k even worth it or should i look into changing the engine all together?

If you swap your engine with another, you may inherit problems with that one too
Find out if it's rings or valves, doubt it's head gasket. Maybe your mechanic has a bore scope to take a peek?

FYI Lincoln aviator has the same engine, saw a few really cheap on Craigslist

Or. Drive it till it breaks :)

truegraw
12-06-2015, 07:38 AM
if its the valve can i just fix the one head since im low on cash or is that just dumb?

Zack
12-06-2015, 08:54 AM
if its the valve can i just fix the one head since im low on cash or is that just dumb?

With high miles it is foolish to fix only one head.

lifespeed
12-07-2015, 11:26 AM
so is having the heads redone @ 145k even worth it or should i look into changing the engine all together?

If it were me I would pull the engine and rebuild it, assuming stock is acceptable. Even though the pistons, rings and bearings likely have some life left they don't have that much. I am not a fan of pulling heads in the car on these vehicles.

Just doing a valve job (and you're at least going to change the cam timing set too, right?) is not a huge cost savings compared to a full rebuild.

truegraw
12-08-2015, 05:56 PM
yea i may rebuild it further down the road, low on cash now and just want it running decent right now. cam timing set? what does this include? anybody have a parts list for doing the heads? guy said he would change the oil pump and that he wouldnt have to pull the engine to do it? should i deck the heads? any info is appreciated

lifespeed
12-08-2015, 06:16 PM
yea i may rebuild it further down the road, low on cash now and just want it running decent right now. cam timing set? what does this include? anybody have a parts list for doing the heads? guy said he would change the oil pump and that he wouldnt have to pull the engine to do it? should i deck the heads? any info is appreciated

It may be difficult to change the oil pump in-car because of the pan and pickup, not sure I haven't attempted it. Timing chains, tensioners and guides - use the Ford racing kit with iron ratcheting tensioners and no O-ring.

You're going to pay a lot more labor (and parts) to do a valve job now, and then rebuild the bottom end later. Not sure why you seem to think pulling the heads, machining them and replacing all the associated parts is cheap, where I live that is a lot of labor and money. You plan on leaving the old valve springs, seals, hydraulic tensioners and rockers in there?

Turbov6Bryan
12-08-2015, 06:42 PM
Once you freshen up the top end, the bottom end will fail. Murphy's law!

Why mess with the heads when it could be the piston or rings?

truegraw
12-09-2015, 07:18 AM
its a valve. yea didnt say it was gonna be cheap but compared to rebuilding it would be. do you guys have a list of what engines will drop in the marauder with no modifications?

RubberCtyRauder
12-09-2015, 07:24 AM
The only drop in is a marauder, I know Lincoln aviator can be used, but marauder stuff must be swapped over, but I don't know what exactly.

Zack
12-09-2015, 07:33 AM
Pull both heads, have them redone.
If you dropped a valve seat, have the exhaust seats replaced in that cyminder at minimum.
Replace the timing chain guides at minimum. If you have steel tensioners, leave them.
If you have plastic tensioners, upgrade them to the steel units.
No need to change the oil pump, as the engine needs to be out.

Do not listen to anyone else saying the pistons/rings/bearings are worn out.
If it ran fine before, it will continue to run fine after the heads are fixed.

truegraw
12-09-2015, 05:42 PM
found a set of 98 cobra heads with like 110k on em for $250 will they bolt straight up?

lifespeed
12-09-2015, 06:05 PM
found a set of 98 cobra heads with like 110k on em for $250 will they bolt straight up?

They're different heads. Don't know about bolting up, but they have a different port design.

If you're going to go to all the trouble of pulling the heads why would you install a set that has as many miles as the set you already have? Why not do a proper valve job, and replace the valve springs and seals while you're in there?

Penny wise, pound foolish. If you cheap out enough with your clever money-saving ideas you're gonna do this twice and it will cost you more. :rolleyes:

Do it right, do it once.

Turbov6Bryan
12-09-2015, 06:59 PM
http://www.ebay.com/ulk/itm/121835153135

That guy has 16 intake valves for 60.00 obo
Xxxxxxxxccc 16 exhaust xxxxxxx 60.00 obo
32 springs

The valves he has are about $2.00 less per valve

Might do more research, rock auto says those valves fit our cars

truegraw
12-10-2015, 03:22 AM
yea i dont think ill be keeping this one very long. just want it running right before i sell it and lose money on it and really dont want to lose my whole a@@. figured i would just buy the 98 cobra heads and put them on myself and be done with it

FordNut
12-10-2015, 04:13 AM
yea i dont think ill be keeping this one very long. just want it running right before i sell it and lose money on it and really dont want to lose my whole a@@. figured i would just buy the 98 cobra heads and put them on myself and be done with it

Pull the heads, have them fixed, put them back on. Only replace bad valves, not the whole set. It's probably just a valve seat.

justbob
12-10-2015, 05:47 AM
Pull the heads, have them fixed, put them back on. Only replace bad valves, not the whole set. It's probably just a valve seat.


This. Easiest, cheapest route and will be just fine..


Sent from my iThrone using Tapatalk

truegraw
12-10-2015, 05:12 PM
couldnt i just pull the bad one and fix that valve and put it back on? i just want the car to be gone, already out a pretty penny on it

FordNut
12-10-2015, 05:21 PM
Sure...

To pull one head you have to pull the intake, both valve covers, timing cover, harmonic balancer, timing chain.

I assume you'll try to sell it somewhere besides on MM.net if you're planning to half-a$$ the repair job. Guaranteed this thread will get linked up to your car for sale posting.

justbob
12-10-2015, 05:46 PM
This could have been all buttoned back up and done a week ago instead of searching out the cheapest way possible.

Take the advice that you asked for, do a proper repair, and sell it to recoup costs or sell it as is and take a very costly hit.

There is nothing cheap about a 4V..


Sent from my iThrone using Tapatalk

Zack
12-10-2015, 06:18 PM
How much for the whole car as-is?
Color?

lifespeed
12-10-2015, 07:02 PM
How much for the whole car as-is?
Color?

Just what you need, another Marauder!

truegraw
12-11-2015, 10:40 AM
silver. gave 7k for the thing. new coil over plugs, idle air, Has jmod, head cooling mod, k&n, new rear end seals and clutches, decent tires. Upgraded 6 disk cd changer (reads MP3) New in box upper and lower control arms new rear kyb shocks installed fronts still in box, Camber kit, link kit, suspension mounts . Drives great has 91 octane tune with tuner. Cats deleted. Dont sweat it i wont be putting it up here for sale. So i could just do one head and just drive the thing until i have enough to build a decent engine for it. which will be later next year. Someone said something about "a ol trick" getting the valve on a drill and spinning it to seat better? any minor patches that would last about 6-8 months? car doesnt do to bad just lopes at idle bad. trying to drive at least as possible. how much is it worth? guy had it for over 100k, in good shape

Zack
12-11-2015, 11:02 AM
silver. gave 7k for the thing. new coil over plugs, idle air, Has jmod, head cooling mod, k&n, new rear end seals and clutches, decent tires. Upgraded 6 disk cd changer (reads MP3) New in box upper and lower control arms new rear kyb shocks installed fronts still in box, Camber kit, link kit, suspension mounts . Drives great has 91 octane tune with tuner. Cats deleted. Dont sweat it i wont be putting it up here for sale. So i could just do one head and just drive the thing until i have enough to build a decent engine for it. which will be later next year. Someone said something about "a ol trick" getting the valve on a drill and spinning it to seat better? any minor patches that would last about 6-8 months? car doesnt do to bad just lopes at idle bad. trying to drive at least as possible. how much is it worth? guy had it for over 100k, in good shape

If it is a valve seat, you are washing that cylinder out with gasoline since it never ignites. Do not drive it until it is repaired.
I am interested if you sell it....I have always wanted a silver.
May even partial trade you my beater black

Or you can just bring it to me to repair.

truegraw
12-11-2015, 11:53 AM
give me a number to call and we will discuss. mine is 270-402-4953

FordNut
12-11-2015, 03:44 PM
Or you can just bring it to me to repair.

^^^ That's what you ought to do, and since you've already got all these other goodies VVV go ahead and get Zack to install them too.

silver. gave 7k for the thing. new coil over plugs, idle air, Has jmod, head cooling mod, k&n, new rear end seals and clutches, decent tires. Upgraded 6 disk cd changer (reads MP3) New in box upper and lower control arms new rear kyb shocks installed fronts still in box, Camber kit, link kit, suspension mounts . Drives great has 91 octane tune with tuner. Cats deleted. Dont sweat it i wont be putting it up here for sale. So i could just do one head and just drive the thing until i have enough to build a decent engine for it. which will be later next year. Someone said something about "a ol trick" getting the valve on a drill and spinning it to seat better? any minor patches that would last about 6-8 months? car doesnt do to bad just lopes at idle bad. trying to drive at least as possible. how much is it worth? guy had it for over 100k, in good shape