Question about 1993 Ford Explorer Limited

2 Answers

I have a 1993 ford explorer with a 4.0. have replaced head gaskets and find that the hyd lifters are pumping up to the point they are keepeing the valves open. have changed lifters and have the same problem. what will cause this ?

Posted by on

  • dmburdett Sep 28, 2009

    heads were not milled. my 15year son ran it hot ,this blowed the gaskets. push rods were never changed. can bottom cyl ouy and check with rockers loose and have around 120 psi compression. it is as if the lifters will not bleed down to adjust the valves to zero lash. thanks

  • Richard Scordino May 11, 2010

    If the cylinder head was milled, it's possible the push rods are now too long. some engines also use different length rods on intake and exhaust check and see if that's the case with yours...you may have mixed them up.

×

2 Answers

  • Level 1:

    An expert who has achieved level 1.

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 29 Answers

You are not letting them bleed down.

The lifters will stay "pumped" for some time after the engine is first started. Sometimes its so bad the engine won't start (if fully pumped). If the engine won't start, you can cycle the engine by hand and compress the valve springs and let it sit for a time and they will bleed down (a couple at a time then turn 1/4 turn or so and wait again), but the easiest way is to run the engine at zero lash and tighten the rockers to spec. (one CYLINDER at a time) and let the other cylinders run until the miss goes away. When the miss goes away that cylinder will be at adjusted zero and you can move to the next cylinder. The thinner the oil the faster it will stabilize (which means engine hot).

If the engine will start at adjusted (but pumped up) lash, just let it run. It could take up to 30 minutes for the lifters to leak down.

Lastly, you can pull the lifters out, remove the snap rings, remove the plungers and drain the oil. Reassemble the engine with "dry" lifters, adjust them static (engine off) then start the engine. After the engine warms up they should fill with oil and run normally.

If you don't know how to do any of this, you probably shouldn't be in there to begin with. If you adjust them incorrectly you can damage your engine.

Some engines have no adjustment and those you just have to wait to stabilize. If they won't start, you turn them by hand and let them bleed down.

Posted on Sep 28, 2009

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Ford Master
  • 6,982 Answers

Just did a quick check of pushrods for your engine...there are three different length listed. That tells me there are options, one of which may solve your problem.

Posted on Sep 28, 2009

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:

2 Answers

How do you change a hyd. lifter on a 1991 ford f150 5.0 engine ?


Thats an all day thing. You would need to get a decent repair manual like a Chiltons or something. Then READ IT. Replacing a lifter is an involved and complex repair and shouldn't be attempted by someone that is not familiar with it. Unless, of course, its a ford 302 and then....who cares?

Nov 17, 2016 | Ford F-150 Cars & Trucks

1 Answer

2002 explorer 4.0L sohc: I've stripped driver side down to ticket arms and tip of lifters. Is there anyway to replace the lifters without removing the head?


I think they have a tool that you can slide the lifters out of the head without removing the head. I've never done this on this particular vehicle but I have on Ford V8 engines from the 70s without any problem. I'm pretty sure you don't need to remove the heads to replace the lifters.

Nov 18, 2015 | Cars & Trucks

1 Answer

I need a tool used to repair the lifter in a ford explorer


there is not special tool. you have to take off the lower intake manifold and both head to replace the lifters. I rebuld motors all day in my garage . it is a big job

Nov 17, 2012 | 1999 Ford Explorer

1 Answer

I have told that I might have a blown head gasket, what can I do temporaily to keep from over heating a 93 Ford Exlorer 4.0 OHV engine?


If the gasket is blown there is no fix other than to replace the gasket. No temporary fixes will work.

Aug 20, 2010 | 1993 Ford Explorer Limited

1 Answer

Part requirments for Cam and lifters


Yes you will need the following:

Cam
Lifters
Assembly lube
Water pump gasket
Intake gasket
Timing cover gasket

Lifter removal tool
Puller for harmonic balancer
Cam installation tool/removal tool


I also would recommend replacing the timing chain and timing gears since you are going to have to take the timing chain off anyhow.

You will also need the associated tools to do the job, plenty off rachets, box wrenches and such.

If you are doing mechanical lifters you will also a feeler gauge to measure the valve clearance and make adjustments.

I cant think of anything else off the top of my head.

If you are doing a cam with more lift then I would recommend replacing your valve springs as well, it is easy and it will assure you do not incur valve float. You will have to take the rockers off when you install the new lifters because you have to remove the pushrods. I also recommend you replace the pushrods while you are at it, they are cheap. You will need a valve spring compressor and new valve springs and locks, they are pretty cheap.

Oct 29, 2009 | 1983 Ford F 250

1 Answer

Cylinder 6 misfire when scanned, check engine light on


May be a hyd. lifter problem, should check compession and that should lead you in right direction, let me know if I can help.

Feb 26, 2009 | 1993 Ford Ranger SuperCab

1 Answer

Temp gauge fluctuation on 95 explorer


it is possible it might have a cracked or blown gasket head! simple trick check the oil to see if its milky colored if it is then its your head or head gasket if not let me know thanks josh........

Dec 15, 2008 | 1995 Ford Explorer

1 Answer

Excesive lifter noise, do i need oil pump?


Try a compression test to determine wether the cam timing is right in respect of its ability to complete a decent compression /ignition cycle as it sounds more like a timing issue than an oil pump.Also double check valve clearances.It sounds like the problem has only occured since changing the parts you mentioned so would have to believe one of the parts or reassembly was to blame and not the oil pump.

Oct 28, 2008 | 1997 Ford Probe

1 Answer

1993 explorer 4.0 ltr


Ck the maf sensor. It contro;ds air/fuel ration. It's the first sensor out of the air filter. good luck

Aug 26, 2008 | 1993 Ford Explorer Limited

Not finding what you are looking for?
1993 Ford Explorer Limited Logo

250 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts

yadayada
yadayada

Level 3 Expert

75807 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22133 Answers

fordexpert

Level 3 Expert

5495 Answers

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

Answer questions

Manuals & User Guides

Loading...