Question about 2007 Toyota Hilux 2.7
Defective fuel return blocked sometimes
Check your plugs , ck your injectors ,ck your wires too , should be one of the 3
Posted on Mar 28, 2014
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Posted on Jan 02, 2017
SOURCE: Check engine light on
There are three kinds of gasoline engine misfire scenarios, first there is the "under load" misfire and there is the "at engine idle" misfire, and finally there is misfire continuously. All engine misfires exist because one of three things has occurred. First, a cylinder has lost compression, a cylinder needs a certain amount of compression to operate correctly. Second, the ignition system has failed or is failing intermittently, spark is needed at the time of compression to ignite the fuel air mixture. Third, the fuel air mixture is incorrect, proper mixture is needed for the ignition system to ignite fuel properly. If any of these conditions occur in the engine, the engine will misfire.
1. Low or no compression can be caused by
a. burned or leaking intake or exhaust valves
b. worn or broken piston or piston rings
c. worn out camshaft
d. wrong weight motor oil was installed holding the cam followers from adjusting
e. broken valve spring
f. failed head gasket.
2. Ignition system has failed or is failing
a. spark plug has fouled or is worn out
b. ignition coil
c. spark plug wires have shorted
e. engine control module coil driver has failed
3. Fuel/Air Mixture is incorrect
a. vacuum leak at the intake manifold
b. fuel injector has failed
c. EGR valve is stuck open
d. mass air flow sensor has failed
e. oxygen sensor has failed
f. air intake boot is cracked
1. fuel injector has failed or is failing
2. spark plug wire has shorted
3. spark plug is worn out or is cracked
4. ignition coil has failed is failing
Testing a coil on the car is pretty easy. No special tools are required. Just remember to be careful, the amount of electricity generated by your ignition system can be dangerous. If your coil is already off the car, or if you would like a more specific data-driven test, you can bench test your coil. To set up the test, remove one spark plug wire from its plug, then remove the spark plug using a spark plug socket. Next put the spark plug back into the spark plug wire. Be careful not to let anything drop into the empty spark plug hole -- very bad.
Posted on Dec 07, 2008
faulty injector,missed...or inlet gasket leak,(spray crc wd 40)around inlet where it joins to clyinder head if it gets smoother running its leaking,vacuum leak,eg;hose off thats not seen or missed
Posted on Oct 30, 2009
You need a scanner to pull out the engine light codes.
Use a shopu manual to aid you with the diagnosis and repair.
The slip indicator and vsc light being on means these systems are not working. Once you pull the codes and do the repair and erase the codes the lights will go off.
There will be a code in there for the misfiring.
Good luck and keep me posted.
Posted on Mar 09, 2010
Run your vehicle with the hood open at night in a dark place with the headlights off. Look at the spark plug wires to see if spark is jumping out onto your chassis. If you have the long tubular boots, remove the one going to #4 cylinder and see if spark jumps to chassis through the side wall of boot. If so, replace the wire. It also could be the #4 post on your distributor. It's part of the cap assembly and they are usually pretty cheap to replace. Replace rotor button when replacing cap. The rotor button is usually less than 5 bucks.
Posted on Nov 23, 2010
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