Question about 1997 Ford F250 SuperCab

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The tappet fell down into the engine off the fuel pump on a 7.3

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Go buy a magnetic flex rod and see if you can fish it out. If not your going to be a very busy guy.

Posted on Sep 10, 2009

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Take the engine apart and retrieve the tappet.... Nuff said.

Posted on Sep 10, 2009


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Engine bucks and backfires through throttle body under acceleration

for an engine to backfire through the throttle body means that the inlet valve is still open when spark occurs . That means that the timing is too far advanced . IT may also mean that the tappet clearance is out if manual adjustment or the hydraulic followers are pumping up and holding the valves slightly open especially at revs.

Mar 03, 2014 | 1995 GMC Sierra

1 Answer

Kia carens problems

Tappets......... perhaps is what your friend said. The tappets are part of the engine inlet and exhaust valve set up. Most tappets are self adjusting in modern motors, (Hydraulic).
The old fashioned tappets are manually adjusted during regular car servicing. This happens at set intervals, for instance every 20,000 miles.
Inlet valves allow air and fuel into the engine and exhaust valves let the burnt fuel and air out.
Tappets are fitted between the inlet and exhaust valves, they ensure that the valves open on time and more importantly close properly. If the tappet happened to be badly adjusted and did not let the valve close properly then damage to the valve and cylinder head can happen by burning.
If you have a significant power loss I would be surprised to find that the just tappets/valves were to blame.

Jan 26, 2014 | Cars & Trucks

1 Answer

Okay I'll try this again I have the 2008 audi a4 sline 2.0 t fsi 6 speed manual quattro. the engine sounds loud as if two weeks ago. like sticking a potato in the exhaust pipe. or its seeing heavy load. at...

Check the High pressure fuel pump tappet by removing the high pressure fuel pump and pulling out the tappet/cam follower these have a tendency to wear out prematurely also where that tappet rides on the cam it wear out the cam lobe as well. the 2.0T has been there worst engine to date (in my humble opinion) unfortunately.

Oct 18, 2013 | Cars & Trucks

1 Answer

I have just overhaul my engine but when the ignition on it cranks but cant start

Which car is this? Anyway if its cranking then your starter motor and related wiring is fine. Open the engine oil filler cap or head cover and then try to crank and see if tappets are actually moving or not. You should also pop out the fuel line from carb / mpfi to see if actually fuel is coming out of line or not. Because sometimes fuel pump produce humm sound but do not actually pump fuel.

Oct 22, 2012 | 2001 Isuzu Trooper

1 Answer

Oil pressure is really low and valve started ticking after oil change, WHY??

the new oil pressure is affected by the pump speed especially an oil pump that has done a lot of work. Low water pressure is usually a sign of engine wear particularly around the mains and bigends.
As the motor ages and all the parts become worn more and more is lost into the crankcase. As you rev the motor the oil pressure increases and will maintain its pressure at around six or eight PSI.
When you change the oil in the hydraulic tappets drain the oil away and so when you restart the engine after you have changed the oil the worn oil pump take some time to get new oil up and around the hydraulic tappets.
This is a common problem with well used engines, it does not mean that they are not usable but it does mean they are starting to show their age.

Feb 20, 2012 | 2001 Jeep Cherokee

1 Answer

How do I change a fuel pump on my 1995 Ford F350 7.3 2WD Power Stroke Diesel Do I have to worry about the timing eccentric? How and what do I rotate?

Hi, I hope this helps...

1994-96 Engines
See Figures 3 and 4

0900c15280262dd1.jpg Fig. Fig. 3: Details of the fuel pump assembly-1994-96 diesel engine

0900c15280262dd2.jpg Fig. Fig. 4: View of the fuel pump-1994-96 diesel engine
  1. Remove the turbocharger assembly.
  2. Remove the fuel line banjo bolt at the pump.
  3. Remove the fuel line fittings at the rear of the cylinder heads.
  4. Remove the fuel lines assembly.
  5. Loosen the two hose clamps at the fuel pump fittings.
  6. Disconnect the water drain hose at the fuel filter.
  7. Disconnect the filter and position it forward.
  8. Remove the fuel pump retaining bolts, then lift the pump out of the crankcase bore.
  9. Remove the fuel pump tappet from the crankcase bore.

To install:
  1. Rotate the engine so the fuel pump eccentric is on the base circle.
  2. Install the fuel pump tappet in the base of the fuel pump.
  3. Replace the O-ring on the fuel pump base.
  4. Install the fuel pump and bolt it in place.
  5. Install the fuel filter and connect the water drain hose.
  6. Connect the two fuel hoses at the front of the fuel pump.
  7. Tighten the fuel line clamps and install the fuel filter retaining bolts.
  8. Install the fuel line assembly and new seal rings at the rear of the pump.
  9. Loosely install the fuel line fittings at the rear of the cylinder heads.
  10. Install the fuel line banjo fitting at the pump. Tighten the fitting to 40 ft. lbs. (54 Nm).
  11. Tighten the fuel line fittings.
  12. Install the turbocharger assembly.

Oct 13, 2009 | 1995 Ford F350

2 Answers

Engine will not start

Check fuel pressure with a guage that goes high enough.
Check for vacuum leaks like broken hoses or hoses fallen off.
Try starting on ether to make sure it is not an electrical problem.

Aug 09, 2009 | 1994 Ford Bronco

1 Answer

Can you change seals on the supply pump return line

If you just want to change the seal at the fuel lines, you may be able to if you have enough patience and a few specially bent wrenches. It is much easier to remove the turbo. If you do remove the turbo don't forget to replace the two o-rings. If you want to remove the pump completly (most of the time a new pump is needed to repair a leak), then I would remove the fuel supply tube bolt from the back of the pump, remove the fuel lines from both heads, replacing the grommets with the updated grommet which resist breaking apart from the newer fuels. Then remove the two bolts from the pump and rotate the engine by hand untill the pump comes up about a half inch. This way if the tappet falls out of the pump the cam lobe will be up enough that it will not fall down into the engine. Then you can replace the o-ring at the bottem of the pump and all the rest of the seals or the entire pump. Don't forget when going back together seat the pump and then rotate the engine by hand again untill the pump sits almost flush and then torque everything. The fuel supply tube should be about 40 ft. lbs. The bolts are probably around 120 inch lbs like everything else but just use good judgement. You can make a clicking sound while using a regular ratchet if it makes you feel better.

Apr 15, 2009 | 1995 Ford F350

1 Answer

Dropped gumball-sized nut down driver-side intake hole.

As far as the fuel pump goes, rotate the engine by hand. You should be able to do this with a 15/16 socket on the alternator pulley. It will pop up and rotate untill the pump comes up about a half inch, this will make the cam lobe come up to the point where YOU SHOULD NOT BE ABLE TO DROP ANYTHING ELSE IN THE ENGINE. :) when you go back together put the pump back in, being carefull to keep the tappet in the pump, then rotate the engine untill the pump sits flush. With the intake problem there may be a screen in the intake just for this reason, some had this and some didn't and I'm not sure when they started putting them in. If not you need to pull the valve cover, luckely you did this on the drivers side and not the passanger.

Apr 07, 2009 | 1995 Ford F350

2 Answers


Intake valve clearance 0.15mm-0.19mm (6-7 thou); Exhaust clearance 0.17mm-0.21mm (7-8 thou). All measurments COLD engine. 2.2 VTEC Prelude engine 1992-1996, import and UK.

Feb 22, 2009 | 1994 Honda Prelude

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