02-04-2016, 01:10 PM
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#16
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Let's revive this thread a few years later and another 100k miles. Any new longterm trouble with 3.4 besides routine maint items? I know there was at one time a head gasket recall on early third gens. Any other year engines suffer rod failure or only 2000 model year? Highest mileage I've seen is 377,000. Any insight on carbon buildup on heads or valves needing adjustment.
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02-04-2016, 01:21 PM
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#17
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I would say that you should Seafoam every so often to help with carbon buildup. Do it slowly so you don't flood it; this should keep you from needing to replace spark plugs and 02 sensor afterwards as well.
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02-04-2016, 01:53 PM
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#18
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Quote:
Originally Posted by AntleredRuin
I would say that you should Seafoam every so often to help with carbon buildup. Do it slowly so you don't flood it; this should keep you from needing to replace spark plugs and 02 sensor afterwards as well.
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you sucking it in through a vacuum line or putting it in the fuel? For O2/spark plug maintenance.
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02-04-2016, 01:56 PM
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#19
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Quote:
Originally Posted by WATony
you sucking it in through a vacuum line or putting it in the fuel? For O2/spark plug maintenance.
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Through the PCV vacuum line. There are threads on it, search for 'em.
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02-04-2016, 01:58 PM
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#20
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Quote:
Originally Posted by sean2202
Let's revive this thread a few years later and another 100k miles. Any new longterm trouble with 3.4 besides routine maint items? I know there was at one time a head gasket recall on early third gens. Any other year engines suffer rod failure or only 2000 model year? Highest mileage I've seen is 377,000. Any insight on carbon buildup on heads or valves needing adjustment.
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The highest mileage i've seen for 5VZ-FE is on a 97 Tacoma (Member on TacomaWorld) -- 489,000 miles before head gasket failure.
I am FULLY unaware of a head gasket recall on any third gen. It's also not in the Buyers Guide, and
@ 4-Ripcord
didn't miss anything in that guide that I can think of.
Are you maybe talking about the 3.0 on the 2nd gen?
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02-04-2016, 02:14 PM
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#21
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Quote:
Originally Posted by amalik
The highest mileage i've seen for 5VZ-FE is on a 97 Tacoma (Member on TacomaWorld) -- 489,000 miles before head gasket failure.
I am FULLY unaware of a head gasket recall on any third gen. It's also not in the Buyers Guide, and
@ 4-Ripcord
didn't miss anything in that guide that I can think of.
Are you maybe talking about the 3.0 on the 2nd gen? |
The local dealer still services a Tacoma that has over a million miles.
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02-04-2016, 02:35 PM
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#22
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Change your oil to prevent sludge. A carbon cleaning is beneficial on them if you don't do highway driving often. Mine has low miles but it pings on regular fuel due to carbon buildup caused by nearly 15 years of mostly city driving. I don't use cheap gas either, but I would imagine the issue would be worse if I did. I plan on getting a MotorVac treatment done. Think of it as Seafoam on steroids.
Make sure you change your transmission fluid so that it is up to par with your 5VZ!
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02-04-2016, 02:44 PM
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#23
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Great engine, pretty bulletproof and legendary. Stay on top of coolant changes, some say a new radiator/lines every 150-200K, timing belt/water pump/tensioners every 90-100K. Valve cover gaskets leak but that happens in any engine and the replacement is worth it. I Seafoam the fuel every oil change and switched my 2002 LTD to high-mileage full synthetic. Not a single leak. Just replaced the fan belts and the new ones still squeak, makes me see red every time I start her, but if that's my only problem in a 14 y/o car then I'm golden. Good luck, take your time and find the right T4R for you.
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02-04-2016, 03:27 PM
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#24
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Apparently engine sludge doesn't bother these motors. My truck is heavily sludged (thanks previous owner!) and yet it runs great! Doesn't over-heat, plenty of power and acceleration. Pulls hard up the mountain grades while fully loaded, and I'm averaging about 18 mpg mix and 21 on the highway. She'll hit 390,000 miles later this week and 400,000 in a few months.
Here's a pic from the fill port during the my last oil change. Sludge city! I switched from conventional to synthetic blend. We'll see if it slowly starts to clean things out.
Either way, I'm not too worried about sludge at this point. My engine seems to run just fine with it.
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02-04-2016, 03:29 PM
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#25
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There was a head gasket recall that affected at least the '96 3.4. I bought one new and took it in for the recall a year or so later. Only other recall I was notified about was replacing the rear springs.
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02-04-2016, 10:11 PM
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#26
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Jhfleet, you are correct on that. Not all 96 engines were affected in the recall as I did talk to corporate Toyota one time and my 96 VIN number was not in the range for head gasket. I also had the spring recall on mine. As far as seafoam never used it yet. Does anyone have any proof it removes carbon deposits and if so how often used and method (gas tank or pcv) Heard both sides on the motorvac stuff. Are these high mileage motors on regular oil or synthetics. I use full synthetic on all my stuff, better protection in the cold weather IMO. Radiator is a 100k deal too much at stake here.
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02-04-2016, 11:03 PM
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#27
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I know for a fact that a head gasket recall went in effect for 1996, not sure about 1997 or 1998. I recently bought a 1 owner 96 4runner with a seized 3.4 with 179k miles for $200. Not the engines fault the po neglected a bad oil leak. The owner gave me all the original sales papers and maintenance records from day 1 and included is a dealer receipt for new head gaskets due to a recall shortly after he bought it new. Check out the original window sticker for my 96, and this was 20 years ago!
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02-04-2016, 11:04 PM
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#28
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we have 2 runners with the 3.4. Both on occasion need 02 sensors...Also Around 170k miles both needed new coils and a couple of injectors. Really just easy tasks. Both trucks also have had the coolant temp sensors replaced around the same time. My wife's 96 at 240k needed a new radiator this fall...thats really it. Driveline wise Ive replaced both of our driveshafts around 180k miles also...Mine 4x4 was out of balance and cv joints worn....hers 2wd had a terrible vibration..also was out of balance,
Usual Maintenance.
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02-04-2016, 11:35 PM
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#29
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Quote:
Originally Posted by StreetCreeper
Apparently engine sludge doesn't bother these motors. My truck is heavily sludged (thanks previous owner!) and yet it runs great! Doesn't over-heat, plenty of power and acceleration. Pulls hard up the mountain grades while fully loaded, and I'm averaging about 18 mpg mix and 21 on the highway. She'll hit 390,000 miles later this week and 400,000 in a few months.
Here's a pic from the fill port during the my last oil change. Sludge city! I switched from conventional to synthetic blend. We'll see if it slowly starts to clean things out.
Either way, I'm not too worried about sludge at this point. My engine seems to run just fine with it.
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That's just the baffle on the valve cover. Not a reliable indicator. Your engine is probably clean.
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02-04-2016, 11:55 PM
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#30
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Quote:
Originally Posted by sean2202
Jhfleet, you are correct on that. Not all 96 engines were affected in the recall as I did talk to corporate Toyota one time and my 96 VIN number was not in the range for head gasket. I also had the spring recall on mine. As far as seafoam never used it yet. Does anyone have any proof it removes carbon deposits and if so how often used and method (gas tank or pcv) Heard both sides on the motorvac stuff. Are these high mileage motors on regular oil or synthetics. I use full synthetic on all my stuff, better protection in the cold weather IMO. Radiator is a 100k deal too much at stake here.
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https://www.youtube.com/watch?v=u6UeJXkzDW8
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1996 Toyota 4runner Limited - 4" Lift, 33's, AOR Bumper w/winch
1990 Eagle Talon Tsi- E316G @ 32psi E85 Tuned, 272 cams, ECMlink v3.0, 405whp - Gave back to Brother
2012 Toyota Tacoma DCSB - Stock on 32's- Wifes
2004 Cadillac CTS-V - 5.7L LS6 v8, 6-speed 400hp/400tq - My new DD
http://www.toyota-4runner.org/3rd-ge...read-pics.html
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