10-27-2019, 01:11 AM
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#1
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Cranks, has fuel, air, spark, no start.
Okay what am I missing?
Fuel pump failed. Would hard start and smacking fuel tank would get it running and ran great till shut off. Decided to upgrade to another DD and car sat for a year and now trying to get running.
What I've done.
Replaced fuel pump with walbro 190lph. Was already wired for 190lph as the pump that failed on me was a used denso 190lph I installed few years before.
Replaced battery.
Oil change, coolant change, air filter clean, all fluid top off.
Crank no start. No CELs.
Verified fuel is getting to rails. Can smell fuel at tail pipe and spark plugs wet from fuel.
Verified spark to all 6 plugs.
Checking timing belt and timing Mark's are dead on.
Cleaned maf.
Tested crank and cam angle sensors. Both have good resistance and create voltage.
Next I'm going to pull ecu and check for cam/crank voltage to ecu and look for any solder issues.
Am I missing anything? Damn thing ran great before sitting for a year.
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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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10-27-2019, 02:11 AM
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#2
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Join Date: Sep 2016
Location: San Diego, CA
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I'm assuming you put new fuel in it so :
Have you checked compression? (I'm assuming this is fine though)
What's the resistance of the coil packs?
What's the fuel line pressure?
The ECU going bad would be unlikely since I think it would be a drive-ability issue but without looking more into that I have no idea on the ECU.
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10-27-2019, 07:13 AM
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#3
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Join Date: Sep 2019
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Quote:
Originally Posted by JayRolla
Okay what am I missing?
Fuel pump failed. Would hard start and smacking fuel tank would get it running and ran great till shut off. Decided to upgrade to another DD and car sat for a year and now trying to get running.
What I've done.
Replaced fuel pump with walbro 190lph. Was already wired for 190lph as the pump that failed on me was a used denso 190lph I installed few years before.
Replaced battery.
Oil change, coolant change, air filter clean, all fluid top off.
Crank no start. No CELs.
Verified fuel is getting to rails. Can smell fuel at tail pipe and spark plugs wet from fuel.
Verified spark to all 6 plugs.
Checking timing belt and timing Mark's are dead on.
Cleaned maf.
Tested crank and cam angle sensors. Both have good resistance and create voltage.
Next I'm going to pull ecu and check for cam/crank voltage to ecu and look for any solder issues.
Am I missing anything? Damn thing ran great before sitting for a year.
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Spark plugs wet from fuel? Nooooo....
Remove plugs. Crank it for a while. Install new plugs (Bosh double irridium work great). Remove fuel pump relay or otherwise disable fuel pump. Spray a little starting fluid into air cleaner.
If it fires, the problem is flooding. If not, check compression. The rings may have stuck in that year. Marvel mystery oil in the cylinders may fix that.
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10-27-2019, 07:34 AM
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#5
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I would verify that the fuel pressure is correct. You may have fuel at the rail but not enough. Also check the FPR to see if it is leaking/bad. Those diaphragms can fail when they get old and sit for some time when they are up in the years.
Maybe the 4Runner is getting a little revenge for you letting her sit for some time and was jealous of the Caddy...
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10-27-2019, 08:04 AM
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#6
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I have to agree with Little Ceaser, revenge. After years of being the love of your life, wined and dined at the best gas stations, she sat in the corner while you were hot and heavy with someone else. You sir have a lot of groveling to do. I would start with the fuel. Definitely won't start with wet plugs. It would help if you did the work on your knees in a gravel driveway
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1997 SR5 4x4
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10-27-2019, 10:30 AM
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#7
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Join Date: May 2017
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Real Name: Jon
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Quote:
Originally Posted by brillo_76
Is the crankshaft sensor reading rpm with a scan tool? Has to be 200 or 250 rpm for it to start. If cranking and 0 rpm most likely it.
Sent from my SM-J337V using Tapatalk
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Has spark though. So I would check fuel side first like others suggested. You cant ignore them. They will let get back at you. I mostly start them at least once a month :]
Sent from my SM-J337V using Tapatalk
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7 3rd gens listed in the build thread (2 are parts mobiles)
Build Thread: https://www.toyota-4runner.org/3rd-g...os-builds.html
Brillo's Bucket Fluid Ex changer: https://www.toyota-4runner.org/3rd-g...ml#post3358086
Sparks Plugs Wire and Coil Information: https://www.toyota-4runner.org/3rd-g...on-5vz-fe.html
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10-28-2019, 10:34 PM
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#8
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Quote:
Originally Posted by APhelps
I'm assuming you put new fuel in it so :
Have you checked compression? (I'm assuming this is fine though)
What's the resistance of the coil packs?
What's the fuel line pressure?
The ECU going bad would be unlikely since I think it would be a drive-ability issue but without looking more into that I have no idea on the ECU.
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I have not checked compression but compression/leak down tests will be a step I may have to do. I have not checked resistance at coil packs but all plugs get strong visible spark with new plugs and OEM wires. Fuel pressure has not been checked but I am getting a lot of fuel at the rails. Almost seems like too much for a cold start.
Quote:
Originally Posted by The Cold War Kid
Spark plugs wet from fuel? Nooooo....
Remove plugs. Crank it for a while. Install new plugs (Bosh double irridium work great). Remove fuel pump relay or otherwise disable fuel pump. Spray a little starting fluid into air cleaner.
If it fires, the problem is flooding. If not, check compression. The rings may have stuck in that year. Marvel mystery oil in the cylinders may fix that.
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I almost feel like I am getting too much fuel. Maybe FPR has failed from sitting. I may have fixed the issue and now its flooding not letting it start. Next attempt I am going to get new plugs and try the starting fluid.
Quote:
Originally Posted by brillo_76
Is the crankshaft sensor reading rpm with a scan tool? Has to be 200 or 250 rpm for it to start. If cranking and 0 rpm most likely it.
Sent from my SM-J337V using Tapatalk
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I have seen 50-200 rpms maybe more with my odb2 reader. I have also bench tested both cam and crank sensors to make sure they are creating voltage, have good resistance, have standing power and good ground. I have not checked readings at the ecu though.
Quote:
Originally Posted by LittleCaesar
I would verify that the fuel pressure is correct. You may have fuel at the rail but not enough. Also check the FPR to see if it is leaking/bad. Those diaphragms can fail when they get old and sit for some time when they are up in the years.
Maybe the 4Runner is getting a little revenge for you letting her sit for some time and was jealous of the Caddy...
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Oh I know its revenge for cheating on her so long. I have a lot of fuel at the rails. Almost seems like too much. Maybe the FPR has failed and is flooding the motor.
Quote:
Originally Posted by St Runner
I have to agree with Little Ceaser, revenge. After years of being the love of your life, wined and dined at the best gas stations, she sat in the corner while you were hot and heavy with someone else. You sir have a lot of groveling to do. I would start with the fuel. Definitely won't start with wet plugs. It would help if you did the work on your knees in a gravel driveway
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She is on the side of the house and I was working in the dirt that was water soaked from recent snow. Not fun. She is paying me back for sure. HAHA.
Quote:
Originally Posted by brillo_76
Has spark though. So I would check fuel side first like others suggested. You cant ignore them. They will let get back at you. I mostly start them at least once a month :]
Sent from my SM-J337V using Tapatalk
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From what I can tell she has LOTS of fuel. Strong spark. Working crank and cam sensors. Timing is dead on. I am thinking now its flooded now and just needs plugs and fresh try after I fixed something. Or the FPR has failed and is flooding the motor.
__________________
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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10-28-2019, 10:40 PM
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#9
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All your grounds are good? Sorry if you covered that already.
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10-28-2019, 10:51 PM
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#10
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Quote:
Originally Posted by JZiggy
All your grounds are good? Sorry if you covered that already.
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Now that you mention it the ground between the passenger side valve cover to firewall is broke. Has been broken and ran fine before all this. Grounds from battery all seem good but I will check them now that you mention it.
__________________
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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10-28-2019, 11:07 PM
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#11
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when ignition on is their voltage at the injectors? all vacuum lines hooked up fuses good. also check the wires at the ignitor. spray some starter fluid and see if it fires up.
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10-28-2019, 11:13 PM
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#12
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Quote:
Originally Posted by spartacus
when ignition on is their voltage at the injectors? all vacuum lines hooked up fuses good. also check the wires at the ignitor. spray some starter fluid and see if it fires up.
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All injectors are firing fuel. Fixed all vacuum lines. Have sprayed starter fluid but plugs are wet from fuel since no start.
__________________
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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10-28-2019, 11:18 PM
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#13
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Join Date: Oct 2019
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could be a dumb idea but, make sure your air filter isn't clogged up. could cause it to run way too rich like you describe.
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10-28-2019, 11:30 PM
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#14
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Quote:
Originally Posted by wtfemery
could be a dumb idea but, make sure your air filter isn't clogged up. could cause it to run way too rich like you describe.
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I'm running no air filter at the moment.
__________________
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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10-29-2019, 04:57 PM
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#15
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Hmmm no filter huh? I've never tried starting the 3.4 w/o an air filter.
I know a polaris engine (carb) is entirely different yet they won't start w/out an air filter in place. Just a thought....
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2001 Limited 4WD - 346+K - SunfireRed\Thunder Cloud; - 265/75/16 Michelin A/T2s - Fat Pat's 1.5" BL - StopTech ANGLED rotors - In series 699 trans cooler, New Yota1 transmission, All new OEM suspension front to rear.
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