Question about Land Rover Freelander

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Cylinder 1&3 missing problem when engine cold or hot after timing belt and exhaust valves replacement. we have 180 psi compression. Leak down test under 5% in each cyl. injectors have signal& spraying. ignition coil are working properly. We found after removing the spark plugs a light coat of varnish in spark plug #1&3 the rest have normal color properly working. we check the timing with Land Rover Tools. Everything seems to be in perfect order. Bank #2 works fine but.Bank#1 only cyl 5 works. We looked for vacuum leak and we couldn't find anything wrong. No smoking or vapor in the exhaust pipe. The cam key's are ok .cam gears ok. Timing mark according with specs. Freelander 2003 V6.

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It sounds to me like the 1 & 5 leads are cross connected, have you tried swapping them?

Posted on Sep 29, 2009

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4 Answers

Trying to replace broken timing belt. Trying to set #1 cyl. to TDC manually. no compression reading on 1 &4, readings on 2 & 3. What could cause this?? HELP!!


Hole in the piston crown is the worst Charles, but let's not be pessimistic :>(

More likely valves open. At TDC firing stroke both inlet and exhaust valves should be closed. The flat, low part of the cam should be on the followers. So 1 and 4 have valves open, 2 and 3 are closed. If you turn the cam 180 degrees, you should have compression on 1 and 4 and no compression on 2 and 3.

The other thing though, is that when the timing belt breaks, the valves are often in the wrong place at the wrong time and can often meet the piston head on. This can bend the valves. or damage the piston. The normal advice is to remove the cylinder head to check, and then service the valves whilst you have it apart.

A job like this, you need a workshop manual.

May 18, 2016 | 1999 Toyota Camry

2 Answers

What is the compression on each cilinder


it varies but should be over 100 psi

Jul 17, 2015 | Cars & Trucks

1 Answer

96 acura tl 2.5 liter,short term fuel trim at negative 20 percent


Do a cylinder leak down test,for bad valves on #3
or head gasket,misfires for a reason

(Cam Worn ?)

Have to get rid of any misfires

If your taking out 20% your correcting for a rich condition,maybe

Some injector issues,old,need to be sent away for cleaning & flow
testing or replaced?

Drive it for 30 miles & add short & long term & see what you get

Exhaust Converter any good ?

Mar 25, 2014 | 1996 Acura TL Series

2 Answers

What is the psi compression on a 1998 kia sportage supose to be?


contact the parts store for specs they should have it on the computer system under overhaul specs..ask for a printout of rebuild proceedures..

Jan 19, 2013 | 1998 Kia Sportage

1 Answer

Code po301 cylinder no 1 has 80 psi all the other have 180 psi


How could you be lost

You explained it perfectly

The shop did all the correct diagnoses,
seldom see that at all,they did great job
of finding the issue

Dec 11, 2012 | Saturn Cars & Trucks

2 Answers

Bad compression on cylinder #2 2010 dodge charger


The lowest cylinder should be about 165 PSI, you have big problems here or faulty test equipment.

Oct 01, 2012 | 2010 Dodge Charger

1 Answer

Why is it that the first cylinder does not give the correct compression reading


Very seldom you can find compression specs anymore

You compare one cylinder to the next

Should be no more than 15% difference from highest
reading to lowest cylinder

The first thing to do is a Cylinder Lead Down Test
That will tell you if the intake or exhaust valves leak
or the rings leak

Then you really don't need a compression test,unless
your curious & time isn't important.

If the valves are not leaking, then the timing belt may be
a problem,if you have one of them.

With the A/C on your just confirming an engine idle &
operating performance issue

As always

Check for codes,not just generic & free code reader ones
Need a professional scan tool check

Need a good Battery
Good Battery Cables & all Vehicle Grounds
No vacuum Leaks
No neglected maintenance

The do the timing belt visual inspection

Best to do cylinder leak down & may as well
do compression.

Don't over look ignition misfires

You may be missing the basics & getting
ahead of yourself

Sep 12, 2012 | 2006 Honda Fit

4 Answers

MISFIRING ON CYLINDER 1 VW POLO 1.4 3CYLINDER


I have changed a few cylinder heads under warranty for this type of problem. The exhaust valve guides wear, this causes the exhaust valve to seat badly, giving low compression. if one cylinder compresion reading is more than about 50 psi below the others, then this warrants head removal. It is quite a job, due to the fact that the camshft id chain driven. If you are up for it then once the head is removed, poor liquid into the exhaust ports and see if it leaks out through any of the exhaust valves.

Jul 03, 2009 | 2002 Volkswagen Golf

1 Answer

Timing slipped will it bend intake, exhaust or both sets of valve


First of all, you'll want to perform what's called a 'LEAK-DOWN' test. The assumption you make (regarding Intake versus exhaust) is irrevelant. Interferrence is BOTH intake and exhaust valve clearances. A leak down or "cylinder leakage" test is similar to a compression test in that it tells you how well your engine's cylinders are sealing. But instead of measuring pressure, it measures pressure loss.
A leak down test requires the removal of all the spark plugs. The crankshaft is then turned so that each piston is at top dead center (both valves closed) when each cylinder is tested. Some people start with cylinder number one and follow the engine's firing order.
A threaded coupling attached to a leakage gauge is screwed into a spark plug hole. Compressed air (80 to 90 psi) is then fed into the cylinder. You don't have to use that much pressure... you can use 30 psi... percentages are the same.
An engine in great condition should generally show only 5 to 10% leakage. An engine that's still in pretty good condition may show up to 20% leakage. But more than 30% leakage indicates trouble.
The neat thing about a leakage test (as opposed to a compression test) is that it's faster and easier to figure out where the pressure is going. If you hear air coming out of the tailpipe, it indicates a leaky exhaust valve. Air coming out of the throttle body or carburetor would point to a leaky intake valve. Air coming out of the breather vent or PCV valve fitting would tell you the rings and/or cylinders are worn.
A leakage test can also be used in conjunction with a compression test to diagnose other kinds of problems.
A cylinder that has poor compression, but minimal leakage, usually has a valvetrain problem such as a worn cam lobe, broken valve spring, collapsed lifter, bent push rod, etc.
If all the cylinders have low compression, but show minimal leakage, the most likely cause is incorrect valve timing. The timing belt or chain may be off a notch or two.
If compression is good and leakage is minimal, but a cylinder is misfiring or shows up weak in a power balance test, it usually indicates a fuel delivery (bad injector) or ignition problem (fouled spark plug or bad plug wire). These are not ABSOLUTE conclusions -- each assumption must be VERIFIED before concluding anything. You mentioned "the lifters seem to be collapsed."... Did you VERIFY this? Since you KNOW the engine is OUT - OF - TIME because you KNOW the timing belt has SLIPPED, then you know you must PUT IT BACK IN TIME... right?...before you can continue diagnosis.... right? Otherwise, what are you MEASURING?

Jun 24, 2009 | 2005 Hyundai Elantra

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