I don't know what the expected mileage of the spark plugs should be but I'm at 170,000 miles and the engine has started to run rough. I have to change the valve cover gaskets so I will check the plugs during that job. Nice tip on the connectors.
@@glennjones6004 These platinum plugs are usually meant to be swapped after 100k miles for best performance. But I’ve seen people drive Toyotas to over 200k miles without changing plugs. But it’s likely not getting the best fuel economy or perform, so in the end, driving more than 100k on original plugs isn’t really a saving.
I have Venza 2012 with same engine. I changed battery, all spark plugs, all ignition coils ( original parts from Toyota dealership). One month later I got cylinder #1 misfire. I replaced coils between cylinder #1 and #3 still misfire #1. I installed completely new spark plug in #1, still misfire. Engine starting great ( cold or hot), fuel economy great 10.2 Litres per 100 km, ( city), highway about 8 litres. Oil burning about or below 1 litre per 1000 km. tail pipe clean, no smoke. Engine has good power, but when I drive above 70 km/h, especially uphill engine start shaking and check engine light is flashing. If I release pedal and apply gently, car is running ok. Scanner shows misfire cylinder #1. ( PCV valve is new, MAF sensor clean). Before this problem happened, I changed Mobil #1 oil and filled up Pennzoil ultra platinum and used bottle or Royal Purple fuel system cleaner in fuel tank. I don’t know why engine has misfire #1.
Assuming you checked the plug gaps to be accurate (sometimes factory setting is not precise), then I suspect your fuel injector is possibly dirty or malfunctioning on cylinder #1.
@@DIYLifeSkills Thank you very much for your respond. I checked injectors all of them are good. Unfortunately cylinder #1 has sudden compression loss under power. I think it’s time to change the car. The repair cost $7560.
My 2013 venza with same engine is showing me cylinder 1 misfire. Engine light, trac light and AWD is on. I have changed spark plugs and coils but the problem is still not solved. The engine light comes on when i drive on uphill and i cant go past 40/hr on uphill. The performance is dead. Any help please. Thank you!
When you get check engine light, is it always cylinder 1? This is important to positively confirm. For a given cylinder, in addition to the spark plug, ignition coil, you also have fuel injector. It could be that your fuel injector is partially clogged and needs cleaning. But before you do that, it’s highly important to make sure you only use exact OEM matching spark plug and be sure to double check the plug gap as sometimes they are not set correctly at the factory.
You can also move cylinder 1 plug and coil with another cylinder and see if code moves to that cylinder. If code stays at cylinder 1, then it’s likely you have bad or dirty fuel injector. If the code moves to the new cylinder, then it’s plug or coil that’s still bad.
If the code moved, then this time just swap the coil to another cylinder. If code doesn’t move again, then it’s your plug. If code moves, then it’s coil. How that helps.
@@DIYLifeSkills Thank you so much for replying so quick! Sorry i forget to mention that fuel injectors are cleaned and i even moved cylinder 1 fuel injector to cylinder 4 and still shows cylinder 1 misfire. I changed sparg plugs two times. It is Denso spark plug i think which is original one right? I have swaped both sparks and coils and still misfire on cylinder 1. I have changed engine filters, pcv valve and cleaned the throttle body. Still the same. IDo you think it could be the O2 sensor or fuel filter? It doesnt accelerate on uphill past 40 no matter how much i push down the gas pedal. The fuel consumption went high, it burns oil like crazy and there is unusual amount of smoke coming through the exhaust. Im so frastrated. Thank you so much for your advice!!!
@@fikaduzewde1833 Based on your new info, I strongly suspect that piston rings are either stuck due to carbon deposits which is common for this engine. And on top of it, Cylinder 1 rings could be in much bad shape. I would do piston compression test on all cylinders. I suspect your cylinder 1 is going to show low compression compared to others. You can rent cylinder compression tool from auto part stores. Since these tools vary in accuracy, especially the rental ones that get abused, try to rent 2 or 3 from different stores: O'Reilly, AutoZone, Advanced Auto, and do the testing with multiple tools get reasonably accurate reading. You can look up video on how to do this testing, and one trick is to add slight oil through spark plug hole on the cylinder where the compression is low and see if that brings up the compression.
Spark plugs replacement would cost you $100 to $200 for labor. But connectors on older cars are going to break and OEM parts are $15-20 each, plus labor. So parts and labor could total $350 to $500.
@@DIYLifeSkills AllData and it hasn't steered me wrong yet. ALSO, why doesn't Chilton, Haynes or any other publisher put out a printed manual on the Venza?
@@dieselscience I’ve used AllData for 3 years and some sections are pretty good and some sections have bare bone details. The link I gave above was directly from Toyota service manual so should be accurate
I don't know what the expected mileage of the spark plugs should be but I'm at 170,000 miles and the engine has started to run rough. I have to change the valve cover gaskets so I will check the plugs during that job. Nice tip on the connectors.
@@glennjones6004 These platinum plugs are usually meant to be swapped after 100k miles for best performance. But I’ve seen people drive Toyotas to over 200k miles without changing plugs. But it’s likely not getting the best fuel economy or perform, so in the end, driving more than 100k on original plugs isn’t really a saving.
@@glennjones6004 also this engine is one of the easiest cars to change plugs.
Do you happen to have a link to the pictures of the connector wires mine are all mixed up
Great vid and easy info
Thanks for the kind feedback
I have Venza 2012 with same engine. I changed battery, all spark plugs, all ignition coils ( original parts from Toyota dealership). One month later I got cylinder #1 misfire. I replaced coils between cylinder #1 and #3 still misfire #1. I installed completely new spark plug in #1, still misfire. Engine starting great ( cold or hot), fuel economy great 10.2 Litres per 100 km, ( city), highway about 8 litres. Oil burning about or below 1 litre per 1000 km. tail pipe clean, no smoke. Engine has good power, but when I drive above 70 km/h, especially uphill engine start shaking and check engine light is flashing. If I release pedal and apply gently, car is running ok. Scanner shows misfire cylinder #1. ( PCV valve is new, MAF sensor clean). Before this problem happened, I changed Mobil #1 oil and filled up Pennzoil ultra platinum and used bottle or Royal Purple fuel system cleaner in fuel tank. I don’t know why engine has misfire #1.
Assuming you checked the plug gaps to be accurate (sometimes factory setting is not precise), then I suspect your fuel injector is possibly dirty or malfunctioning on cylinder #1.
Also, always try to use tier 1 (top grade) gasoline and add some fuel injector cleaner to your gas tank every 3-6 months.
@@DIYLifeSkills
Thank you very much for your respond. I checked injectors all of them are good. Unfortunately cylinder #1 has sudden compression loss under power. I think it’s time to change the car. The repair cost $7560.
Great info! Thanks!
My 2013 venza with same engine is showing me cylinder 1 misfire. Engine light, trac light and AWD is on. I have changed spark plugs and coils but the problem is still not solved. The engine light comes on when i drive on uphill and i cant go past 40/hr on uphill. The performance is dead. Any help please. Thank you!
When you get check engine light, is it always cylinder 1? This is important to positively confirm. For a given cylinder, in addition to the spark plug, ignition coil, you also have fuel injector. It could be that your fuel injector is partially clogged and needs cleaning. But before you do that, it’s highly important to make sure you only use exact OEM matching spark plug and be sure to double check the plug gap as sometimes they are not set correctly at the factory.
You can also move cylinder 1 plug and coil with another cylinder and see if code moves to that cylinder. If code stays at cylinder 1, then it’s likely you have bad or dirty fuel injector. If the code moves to the new cylinder, then it’s plug or coil that’s still bad.
If the code moved, then this time just swap the coil to another cylinder. If code doesn’t move again, then it’s your plug. If code moves, then it’s coil. How that helps.
@@DIYLifeSkills Thank you so much for replying so quick! Sorry i forget to mention that fuel injectors are cleaned and i even moved cylinder 1 fuel injector to cylinder 4 and still shows cylinder 1 misfire. I changed sparg plugs two times. It is Denso spark plug i think which is original one right? I have swaped both sparks and coils and still misfire on cylinder 1. I have changed engine filters, pcv valve and cleaned the throttle body. Still the same. IDo you think it could be the O2 sensor or fuel filter? It doesnt accelerate on uphill past 40 no matter how much i push down the gas pedal. The fuel consumption went high, it burns oil like crazy and there is unusual amount of smoke coming through the exhaust. Im so frastrated. Thank you so much for your advice!!!
@@fikaduzewde1833 Based on your new info, I strongly suspect that piston rings are either stuck due to carbon deposits which is common for this engine. And on top of it, Cylinder 1 rings could be in much bad shape. I would do piston compression test on all cylinders. I suspect your cylinder 1 is going to show low compression compared to others. You can rent cylinder compression tool from auto part stores. Since these tools vary in accuracy, especially the rental ones that get abused, try to rent 2 or 3 from different stores: O'Reilly, AutoZone, Advanced Auto, and do the testing with multiple tools get reasonably accurate reading. You can look up video on how to do this testing, and one trick is to add slight oil through spark plug hole on the cylinder where the compression is low and see if that brings up the compression.
Professional 👍.
How much this cost if you were to take it to the shop please and thank you
Spark plugs replacement would cost you $100 to $200 for labor. But connectors on older cars are going to break and OEM parts are $15-20 each, plus labor. So parts and labor could total $350 to $500.
My manual specifies 14 pounds of torque.
What manual is that? I just googled again and found the Toyota service manual for 1ARFE and it's showing18 ft-lbs
workshop-manuals.com/toyota/venza_awd/l4-2.7l_(1ar-fe)/powertrain_management/ignition_system/ignition_coil/component_information/service_and_repair/components/page_4012/
@@DIYLifeSkills AllData and it hasn't steered me wrong yet. ALSO, why doesn't Chilton, Haynes or any other publisher put out a printed manual on the Venza?
@@dieselscience I’ve used AllData for 3 years and some sections are pretty good and some sections have bare bone details. The link I gave above was directly from Toyota service manual so should be accurate
@@DIYLifeSkills Toyota never published a service manual for the Venza... unless your information was stolen from a dealership.
Every one fails to show how to replace the back bank spark plugs
1ARFE is a 4 cylinder engine. There is no front or back side.
Great info! Thanks!