Question about 2000 Toyota Corolla

1 Answer

Why air pressure in tapet cover blow pipe when complete repair engine ?

Posted by on

Ad

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 117 Answers

Air pressure is not uncommon and engines are design to handle this pressure by putting the excess crankcase exhaust through the pcv valve and back into the engine, A big jump in pressure caused from excessively worn rings, broken ring land, or broke piston will need you attention soon The trick is determining if you have to much.. Unless there is an increasing amount of oil coming out of the valve cover breather port I wouldn't worry about it(a little is fine).
In your case, possible causes on a freshly bebuilt engine would be incorrect ring to cylinder bore clearance, incorrect ring endgap, possibly a poorly made piston. First have you compression checked if you have a major problem it more than likely will show up.

Posted on Aug 20, 2010

Ad

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 there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this 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.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

How to flush a gmc heater core


Dear Tim
Disconnect the heater hoses from the engine block.
Using some steel or plastic pipe of the right diameter to fit inside the hoses.
Clamp the pipes inside the hoses, and attach a garden hose or a compressed air hose to the pipe to blow the heater core clean. Remember, the normal pressure that the core is designed for is about 15 # per square inch, so either normal household water pressure or an air compressor can blow the core to pieces, so be REALLY gentle whilst blowing it out.
God bless your efforts.

Dec 13, 2016 | GMC Cars & Trucks

Tip

PCV - Positive Crankcase Ventilation valve/pipe


1.8) PCV - Positive Crankcase Ventilation valve

What is it? The PCV valve is a thumb sizedplastic elbow that is designed to relieve the build up of pressure in the crankcase. A pipe connects the PCV to the airducting. The function of the PCV is toreturn exhaust gases (blow-by of the piston rings during ignition) from thecrank case to the air intake.

Where is it located? PCV is found on the crankcasebreather pipe or cam cover

How does it work? Some pressure relief systems have a convoluted set of internalpassageways within the crankcase to allow oil mist to settle out and to allow excess pressure tovent in an unrestricted manner through a pipe directly into the air ducting. On other systems thePCV opens when the vacuum in the inlet manifold is low i.e. when the engine isrunning at speed and when the positive pressure of blow-by gases builds up inthe crank case. The PCV is held closefor the most part by the vacuum of the inlet manifold at idle. Often the PCV is unidirectional, allowing gas/airto flow only from the crankcase to the throttle intake. If the valve becomes clogged and stays closedthis can cause pressure buildup in the crankcase and this in turn causes oil toleak through seals etc. Alternatively ifthe valve stays open the ingress of unmetered air can upset thefuel/mix and cause rough idling.

Symptoms of faulty PCV

  • Erratic idling - If the PCV fails to close when at idle then the extra flow of unmetered air from the crankcase can compromise the ECU's ability to maintain a balanced fuel to air mixture. The symptoms very much mimic a leak in the air ducting.

How to check? Remove the PCV and first give is ashake, if it rattles freely this is a good sign. No rattle could indicate a gummed upvalve. **** and blow though it, one way should be easy the other way difficult. If the type of PCV is governed by a vacuumline then the passage of air through the valve will be restricted until asuitable vacuum is applied to it.

How to fix? It may be possible to repair the PCV by rinsing it out with a little fuel or carburetor choke spray to act as a solvent on the oily gunk that has gummed it up. If the valve is beyond reasonable repair then replace it.

NEXT 1.9) MAP - Manifold Absolute air Pressure sensor

on Jul 22, 2011 | Mercedes-Benz E-Class Cars & Trucks

1 Answer

Mazda B2500TD 97model l have problem with oil


You have excessive engine breathing/pressure. When you did the overhaul did you replace the rings etc and deglaze the bores because excessive crankcase pressure is your problem and its forcing the oil down the breather pipe. Poor valve guide stem seals is another area.

Oct 09, 2014 | Cars & Trucks

1 Answer

Oil pressure leaks tapet cover


you may have broken piston rings and your sump is being pressurized and blowing the oil out

Apr 02, 2014 | 2002 Ford Explorer

1 Answer

Oil leaks tapet cover


check that the PCV valve and hoses are clean and operational.

Apr 02, 2014 | 2007 Tata Indica Dicor

1 Answer

My toyota 5a engine tapets are very noisy when running


check your engine oil pressure with a manual gauge, compare it to repair manual specks. if oil pressure is too low and mileage is 80,000 or below you could get by with an oil pump replacement. If miles are lower see if tappets are adjustable and try it. only if oil pressure is good as well. If mileage is higher than 80,000 you may be in the market for an overhaul if oil pressure is low.

Apr 18, 2013 | Cars & Trucks

1 Answer

A/c not blowing air


Possibly a leak in the AC system. When refrigerant pressure drops a switch shuts down the AC system completely to prevent damage to the compressor.
Check cold / heat on incoming / outgoing pipe of the compressor. If temperature on both sides is the same the clutch of the compressor isn't activated.

Check with your local repair workshop for leaking AC pipes / coupling

Jun 26, 2011 | 1992 Nissan Pathfinder

1 Answer

Engine is making loud noise from rocker cover area. oil pressure


tapets or camshaft has gone, check them out before you start it again

Jun 06, 2009 | 1999 Cadillac Catera

1 Answer

Peugeot 405 oil blows out of the oil filler


yes their is a breather pipe but if its that bad then either its completly blocked or you need a engine rebuild.The breather is on the front of the engine with a pipe running to the air intake and the dip stick is in the top

Mar 03, 2009 | 1991 Peugeot 405

1 Answer

Vw passat 2000 1.8t front wheel drive


please rate me solved...thanks

DTC P0411/16795: SECONDARY AIR SYSTEM - INCORRECT FLOW DETECTED
Test Requirements
Ensure all fuses are okay, battery voltage is at least 11.5 volts, all electrical accessories are off, A/C is off.
Ensure engine is mechanically sound.
Test Procedure

NOTE
Secondary air system is activated by ECM and blows air into exhaust pipe
upstream of catalytic converter for 100 seconds during a cold start, 41-91°F (5-
33°C). Engine must be cold to perform following test procedure.

1. Ensure fuse and secondary fuse (secondary fuse is 40 amp and is located in fuse holder on top of battery)
are okay. Check hoses and components of Secondary Air Injection System, for damage, loose fit and
improper installation, check vacuum hoses for Secondary Air Injection System. Repair as necessary.
Erase DTC memory. Verify repair. If DTC does not reset, test is complete. Perform ECM relearn
procedure. See TEST DRIVE RELEARN PROCEDURE .
2. Remove engine cover. Disconnect pressure hose from Secondary Air Pump Motor (V101), by pressing
buttons on hose connector. See Fig. 33 . Using scan tool, check Secondary Air Pump Motor (V101) in
scan tool Output Diagnostic Test Mode (Secondary Air Pump Relay activation mode). See OUTPUT
DIAGNOSTIC TEST MODE .
3. Secondary Air Pump Motor (V101) should run in intervals and air should exit pump at hose connection.
If Secondary Air Pump Motor (V101) is okay, go to step 7 . If motor runs and no air exits secondary air
pump motor, replace faulty Secondary Air Pump Motor (V101). Erase DTC memory. Verify repair. Test
is complete. Perform ECM relearn procedure. See TEST DRIVE RELEARN PROCEDURE . If
secondary air pump motor does not run, go to next step.
4. Disconnect Secondary Air Pump Motor (V101) harness connector, install LED test light at secondary air
pump harness connector terminals. Turn ignition on. Using scan tool, activate Secondary Air Pump Motor
(V101) in scan tool Output Diagnostic Test Mode (Secondary Air Pump Relay activation mode). See
OUTPUT DIAGNOSTIC TEST MODE . LED test light at Secondary Air Pump Motor (V101) harness
connector should flash. If LED test light at Secondary Air Pump Motor (V101) harness connector does
not flash, go to next step. If LED test light at Secondary Air Pump Motor (V101) harness connector
flashes, replace faulty Secondary Air Pump Motor (V101). Erase DTC memory. Verify repair. Test is
complete. Perform ECM relearn procedure. See TEST DRIVE RELEARN PROCEDURE .
5. Using DVOM check resistance of Secondary Air Pump Motor (V101) wiring. See appropriate WIRING
DIAGRAM under ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS. Resistance should
be a maximum of 1.5 ohms for each reading. Check wiring for short circuit to one another in Secondary
Air Pump Motor (N101) harness connector. Repair as necessary. Erase DTC memory. Verify repair. Test
is complete. Perform ECM relearn procedure.
Secondary Air Pump Motor (N101) wiring is okay, go to next step.
6. Check Secondary Air Pump Relay (J299) and Secondary Air Pump Relay (J299) wiring. See DTC
P0418/16802: SECONDARY AIR PUMP RELAY (J299), MALFUNCTION . Repair or replace as
necessary. Erase DTC memory. Verify repair. Test is complete. Perform ECM relearn procedure. See
TEST DRIVE RELEARN PROCEDURE .
7. Disconnect vacuum hose from Secondary Air Injection Valve (N112) and disconnect pressure hose from
secondary air pump motor, press buttons on pressure hose connector to disconnect pressure hose. See Fig.
34 . Blow lightly into disconnected pressure hose, Combi-Valve should be closed. Connect hand vacuum
pump to disconnected vacuum hose and apply vacuum to Combi-Valve, Combi-Valve should open. If
Combi-Valve opens when vacuum is applied, Combi-Valve is okay. Go to next step. If Combi-Valve
does not open when vacuum is applied, replace faulty Combi-Valve. Erase DTC memory. Verify repair.
Test is complete. Perform ECM relearn procedure. See TEST DRIVE RELEARN PROCEDURE .
8. Check Secondary Air Injection Valve (N112). See DTC P0412/16796: SECONDARY AIR
INJECTION VALVE (N112), ELECTRICAL CIRCUIT MALFUNCTION . Repair as necessary.
Erase DTC memory. Verify repair. Test is complete. Perform ECM relearn procedure.
NOTE: Do not use compressed air to check Combi-Valve.
2000 Volkswagen Passat GLS
2000 ENGINE PERFORMANCE Self-Diagnostics - 1.8L Turbo

Jun 21, 2008 | 2000 Volkswagen Passat 4Motion

Not finding what you are looking for?
2000 Toyota Corolla Logo

106 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toyota Experts

yadayada
yadayada

Level 3 Expert

79865 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

Jeffrey Turcotte
Jeffrey Turcotte

Level 3 Expert

8836 Answers

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

Answer questions

Manuals & User Guides

Loading...