Question about 1992 Aprilia Europe 125

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Valve Inspection Help

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I need a little advice. I pulled the tank today to change the air filter and decided to investigate the valve inspection process. Well it's easy to get to the rear cylinder but next to impossible to bump the #4 position valve into TDC. The Falco writeup only talks about the bump but there's got to be another way. Right? Second question, what's the best way to remove the air box? It sure looks like a lot of plumbing that needs to be disconnected, and I can't see any other way to get at the front valves. Any help is greatly appreciated... BTW, getting the tank off, and back on, was a breeze. ,With the bike on the centre stand select a fairly high gear and turn the back wheel by hand until the cam is where you want it . Plumbing on air box isn't too bad , you wil also need to move the top radiator hose to get to the lower left screw on the front cover . It has been done with a long ball end allen key , without removing the top hose . ,,,

Posted on Nov 10, 2008


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Where is the torque converter clutch solenoid located P0744

  • cvt re0f10a
p0744 torque converter

this malfunction is detected when the torque converter clutch does not lock-up as instructed by the tcm. this is not only caused by electrical malfunction (circuits open or shorted), but also by mechanical malfunction such as control valve sticking, improper solenoid valve operation, etc.

dtc logic

dtc detection logic

dtc confirmation procedure

always drive vehicle at a safe speed.

if "dtc confirmation procedure" has been previously performed, always turn ignition switch off.
then wait at least 10 seconds before performing the next test.
1.check dtc detection
with consult-iii
  1. turn ignition switch on.
  2. select "data monitor".
  3. start engine and maintain the following condition for at least 30 seconds.

with gst
follow the procedure "with consult-iii".
is "p0744" detected?
yes - go to see: cvt re0f10a.
no - check intermittent incident. refer to see: testing and inspection\initial inspection and diagnostic overview\intermittent incident.

diagnosis procedure
1.check line pressure
perform line pressure test. refer to see: transmission and drivetrain\continuously variable transmission/transaxle\testing and inspection\initial inspection and diagnostic overview\cvt re0f10a.
is the inspection result normal?
yes - go to 2.
no - repair or replace damaged parts.
2.check torque converter clutch solenoid valve
  1. turn ignition switch off.
  2. disconnect cvt unit connector.
  3. check torque converter clutch solenoid valve. refer to see: cvt re0f10a. is the inspection result normal?
yes - go to 3.
no - repair or replace damaged parts.
3.check lock-up select solenoid valve
check lock-up select solenoid valve. refer to see: cvt re0f10a.
is the inspection result normal?
yes - go to 4.
no - replace transaxle assembly. refer to see: transmission and drivetrain\continuously variable transmission/transaxle\service and repair\removal and replacement\cvt re0f10a\transaxle assembly\exploded view.
4.check secondary speed sensor system
check secondary speed sensor system. refer to see: p0720\cvt re0f10a.
is the inspection result normal?
yes - go to 5.
no - repair or replace damaged parts.
5.check primary speed sensor system
check primary speed sensor system. refer to see: p0715\cvt re0f10a.
is the inspection result normal?
yes - go to 6.
no - repair or replace damaged parts.
6.detect malfunctioning items
check tcm connector pin terminals for damage or loose connection with harness connector.
is the inspection result normal?
yes - replace tcm. refer to see: powertrain management\transmission control systems\control module, cvt\service and repair\cvt re0f10a\exploded view.
no - repair or replace damaged parts.

component inspection (torque converter clutch solenoid valve)
1.check torque converter clutch solenoid valve

check resistance between cvt unit terminal 12 and ground.


is the inspection result normal?
yes - inspection end
no - perform "self-diag results" mode for "transmission".

component inspection (lock-up select solenoid valve)
1.check lock-up select solenoid valve


check resistance between cvt unit terminal 13 and ground.


is the inspection result normal?
yes - inspection end
no - replace transaxle assembly. refer to see: transmission and drivetrain\continuously variable transmission/transaxle\service and repair\removal and replacement\cvt re0f10a\transaxle assembly\exploded view.

Jan 21, 2015 | 2010 Nissan Altima 2.5

1 Answer

I have a 1999 mercury cougar and the timing belt broke. does it have a non interuptable or an interuptable motor?

If you mean an interferancde engine then yes it is. This means that the pistons will come up far enough to hit a valve if it is open. Since your timing belt broke, it is probable that at least one valve may be damaged. If you have access to a "borescope" or some other type of inspection device, you can remove the spark plugs and look at the valves without removing the head. Otherwise I would suggest head removal for inspection of the valves and the pistons. I have seen pistons break instead of a valve bending, although a bent valve is much more common.

Jul 15, 2011 | 1999 Mercury Cougar

2 Answers

How do you change the oil pump in a 1995 Lumina van with a 3.8?


  1. Remove front cover.
  2. Remove oil filter adapter, pressure regulator valve and spring.
Fig. 16 Oil Pump & Housing 42162079

  1. Remove oil pump cover attaching screws, then the cover and gears, Fig. 16 .

  1. Check pump cover and housing for cracks, scoring, porous or damaged casting, damaged threads or excessive wear or galling. Replace as required.
  2. Check pressure regulator valve for scoring, burrs or sticking in valve bore. Replace as required.
  3. Check pressure regulator valve spring for tension loss or bending, replace spring as required.
  4. Check gears for chipping galling or excessive wear, replace as required.
Fig. 17 Oil Pump Inner Gear Tip Clearance Inspection 42162080

  1. Measure oil pump inner gear tip clearance, Fig. 17 . Maximum clearance should be 0.006 inch.
Fig. 18 Oil Pump Outer Gear Diameter Clearance Inspection 42162081

  1. Measure oil pump outer gear diameter clearance, Fig. 18 . Clearance should be 0.008-0.015 inch.
Fig. 19 Oil Pump Gear End Clearance Inspection 42162082

  1. Measure oil pump gear end clearance with gear dropped in housing, FIG 19. Clearance should be 0.0010-0.0035 inch.
  2. Measure pressure regulator valve for valve to bore clearance of 0.0015-0.003 inch.

  1. Lubricate all gears with clean motor oil, then install gears in housing.
  2. Pack pump cavity with suitable petroleum jelly.
  3. Install pump cover and cover attaching screws. Tighten cover attaching screws to specifications.
  4. Install pressure regulator valve and spring.
  5. Install oil filter adapter using a new gasket, tighten oil filter adapter attaching bolts to specifications.
  6. Install front cover on engine. During front cover installation, ensure inner pump gear is properly engaged on crankshaft sprocket.

Jan 29, 2011 | Chevrolet Lumina APV Cars & Trucks

1 Answer

PCV valve failed visual inspection during smog test, but the car passed physical smog test. How to replace 2002 Ford Escape PCV valve assembly?

remove the hose to the PCV and It simply pulls out and a new one is pushed in and hose is inserted back on. It's kind of like a cork. I can not believe they check for visual inspection. Here in SC, we don't have inspections. But anyways, GOOD LUCK

Oct 03, 2010 | 2001 Ford Escape

1 Answer

I got code 92 can you help...I did emmissions and it failed misserably on NOX.Any idea where i can find what this code means

NOX is usually something like an EGR Valve or engine overheating,at least in the inspection lane.
I don't have the code, but you can see if the Egr is working and pull it off to make sure the passages are clean.
Going to inspection on a cool day helps, and don't sit there idling,shut it off.

Aug 03, 2010 | 1998 Nissan 200SX

1 Answer

How to valve clearance inspection

The site link below will give you the info you need from a free download.
Select your make, model and year and download a free's a big one, about 26Mb.
Then get yourself some metric feeler guages and go for it!


May 02, 2010 | 2001 Yamaha WR 426 F

1 Answer

Failed inspection on 2004 Ford F150,heritage series ; Fault Code; P0174: System too Lean.I changed PCV valve and Hose to valve cover gasketbut still failed inspection.Please Help

Have you checked for any small vacuum leaks on any of the emissions hoses? A vacuum leak causes a "too lean" reading. If no leaks, you could have a malfunctioning emissions valve, bad oxygen sensor or fuel injection problem. First I would remove the spark plugs to see if they verify that you have a lean condition. Lean plugs will look white. Google for an image of what a lean burning plug looks like if you like. If they look like burning lean then proceed to trouble shoot each possible area. For example if only one plug shows lean but the others don't you know to look at the injector for only that one cylinder. So don't mix up which plug came from which cylinder.

Sep 12, 2009 | 2004 Ford F150

2 Answers

1996 volvo 960 inspection

If you are in Texas, that car is EXEMPT from emissions. The Volvo onboard OBC II computer does NOT communicate with the machines that test for emissions. It will NEVER pass. You can spend thousands on that car and it will never pass due to the computer issue.

Apr 29, 2009 | 1996 Volvo 960

1 Answer

Valve Inspection

Let us know what measurements you will find. BTW I am planning to check the valves of my Cappy only at the 25k miles mark.also look here- ,

Nov 10, 2008 | 2004 Aprilia Caponord Rally Raid

1 Answer

Pops back through carb

sounds like a sheared or partly sheared flywheel key -

Oct 28, 2008 | Garden

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