Fired up the new setup/engine, weird issue - Page 6 - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Engine Performance This section is for discussion on all engine building related questions.
Sponsored by:
Sponsored by:

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 02-12-2014, 11:40 AM   #101
Junior Member
iTrader: (2)
 
Join Date: Sep 2013
Location: Pittsburgh PA
Posts: 276
Total Cats: 6
Default

Do we know what vvt1 means? as in exactly what circumstances trigger the vvt1 error code?
Davezorz is offline   Reply With Quote
Old 02-12-2014, 11:41 AM   #102
Murderator
Thread Starter
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,185
Total Cats: 2,582
Default

NO!!

and it seems like no friggen person in the universe does. Rev, Brain, everyone saw my thread and no one even commented on it.

I tried searching and even googled it, nothing relevant comes up
18psi is offline   Reply With Quote
Old 02-12-2014, 11:45 AM   #103
Elite Member
iTrader: (1)
 
Leafy's Avatar
 
Join Date: Jun 2012
Location: NH
Posts: 9,091
Total Cats: 90
Default

VVT1 just means the first VVT. If the error made any sense it would be either, vvt position out of bounds or vvt error over a certain threshold. Which would point to the cam trigger tooth either having slipped in real life, or randomly been changed in the tune.
Leafy is offline   Reply With Quote
Old 02-12-2014, 11:50 AM   #104
Junior Member
iTrader: (2)
 
Join Date: Sep 2013
Location: Pittsburgh PA
Posts: 276
Total Cats: 6
Default

yea, this thread is on the first page of google results, not very encouraging.

If it is backfiring in the intake manifold, wouldn't that mean the intake valve is open during the ignition event? This would imply the valve is still open at TDC or that spark is occurring during the intake stroke. .
Davezorz is offline   Reply With Quote
Old 02-12-2014, 11:54 AM   #105
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,860
Total Cats: 1,788
Default

was the VVT actuator removed from the cam? was it put back in the correct position?

I remember Shiuends had a similar issue when he did that. Just dumped in fuel and wouldn't start.
Braineack is offline   Reply With Quote
Old 02-12-2014, 11:56 AM   #106
Murderator
Thread Starter
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,185
Total Cats: 2,582
Default

Yes sir, and yes sir.

There is 1 hole on the gear, and 1 pin on the cam, there is no other way to install it but the correct way.
18psi is offline   Reply With Quote
Old 02-12-2014, 12:00 PM   #107
Junior Member
iTrader: (2)
 
Join Date: Sep 2013
Location: Pittsburgh PA
Posts: 276
Total Cats: 6
Default

Quote:
Originally Posted by Leafy View Post
VVT1 just means the first VVT. If the error made any sense it would be either, vvt position out of bounds or vvt error over a certain threshold. Which would point to the cam trigger tooth either having slipped in real life, or randomly been changed in the tune.
I was hoping maybe that corresponded to a specific problem. I know from experience in OBDII that there is a code for over retarded, over advanced and electrical fault.
Davezorz is offline   Reply With Quote
Old 02-12-2014, 12:15 PM   #108
Elite Member
 
Chiburbian's Avatar
 
Join Date: Feb 2008
Location: Gilberts, IL
Posts: 2,158
Total Cats: 131
Default

Quote:
Originally Posted by Davezorz View Post
If it is backfiring in the intake manifold, wouldn't that mean the intake valve is open during the ignition event? This would imply the valve is still open at TDC or that spark is occurring during the intake stroke. .
This.

This is exactly what happened when the timing belt was installed incorrectly (out of time).

That is not to say that the timing belt install is the problem. If for some reason you are sparking while the intake valve is open that would certainly explain the misfire into the intake manifold as well.

I think that is telling...

EDIT: For the sake of experimentation, perhaps you could go batch fire and batch fuel, eliminate cam sensor need all together for now. Then test. If that doesn't work, then start adjusting trigger angle temporarily. OR, you could just check your trigger wheel

Last edited by Chiburbian; 02-12-2014 at 12:39 PM.
Chiburbian is offline   Reply With Quote
Old 02-12-2014, 12:36 PM   #109
Senior Member
iTrader: (5)
 
Join Date: Jul 2011
Location: Sonora, Ca
Posts: 623
Total Cats: 73
Default

If the weekend comes and he threatens to part out again; I vote ban.
bikersam717 is offline   Reply With Quote
Old 02-12-2014, 12:50 PM   #110
Murderator
Thread Starter
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,185
Total Cats: 2,582
Default

Quote:
Originally Posted by Chiburbian View Post
This.

This is exactly what happened when the timing belt was installed incorrectly (out of time).

That is not to say that the timing belt install is the problem. If for some reason you are sparking while the intake valve is open that would certainly explain the misfire into the intake manifold as well.

I think that is telling...

EDIT: For the sake of experimentation, perhaps you could go batch fire and batch fuel, eliminate cam sensor need all together for now. Then test. If that doesn't work, then start adjusting trigger angle temporarily. OR, you could just check your trigger wheel
I will absolutely check trigger wheel.

I already messed with angle offset - doesn't change anything no matter what I tried, which is between like -90 to +90
Quote:
Originally Posted by bikersam717 View Post
If the weekend comes and he threatens to part out again; I vote ban.
Do you really think I care?

GTFO
18psi is offline   Reply With Quote
Old 02-12-2014, 12:57 PM   #111
Cpt. Slow
iTrader: (25)
 
curly's Avatar
 
Join Date: Oct 2005
Location: Oregon City, OR
Posts: 12,107
Total Cats: 518
Default

Ive kicked a space heater through drywall. First time installing MS. It was going between a bank of injectors going out and a bank of coils going out. I absolutely understand your frustration.
curly is online now   Reply With Quote
Old 02-12-2014, 01:03 PM   #112
Elite Member
iTrader: (1)
 
Leafy's Avatar
 
Join Date: Jun 2012
Location: NH
Posts: 9,091
Total Cats: 90
Default

Which angle offset? Crank or cam?
Leafy is offline   Reply With Quote
Old 02-12-2014, 01:14 PM   #113
Destroyer of Inconel
iTrader: (37)
 
EO2K's Avatar
 
Join Date: Apr 2010
Location: In ur driveway, abusin' ur WPA
Posts: 9,642
Total Cats: 954
Default

Does your bro have a running 01/05? Swap your VVT **** over to that car and see if it works. Confirm and eliminate.

Edit: And that was my 3,000th post

Last edited by EO2K; 02-12-2014 at 02:21 PM.
EO2K is offline   Reply With Quote
Old 02-12-2014, 01:16 PM   #114
Senior Member
iTrader: (1)
 
Join Date: Jun 2006
Location: Sweden
Posts: 1,391
Total Cats: 58
Default

Quote:
Originally Posted by EO2K View Post
Does your bro have a running 01/05? Swap your VVT **** over to that car and see if it works. Confirm and eliminate.
#86, the previous page.
NiklasFalk is offline   Reply With Quote
Old 02-12-2014, 01:27 PM   #115
Newb
 
Join Date: Feb 2014
Location: Gator Country
Posts: 7
Total Cats: 1
Default

Well, this is a stretch, but it's easy enough to check, and the symptoms would be consistent with what you're seeing...

I read on a thread here recently that a member's main timing belt sprocket slipped on the crank shaft because the key wasn't fully engaged in the keyway. Maybe you've already checked, but make sure the #1 piston is really at TDC when the timing mark says it is. If you drop a socket extension through the spark plug hole and rock the crank back and forth with a wrench, you'll know pretty quick if it's at TDC.

If this is the problem, it would explain why it ran at first and then got worse if the sprocket continued to slip.

Good luck. I hope it turns out to be something simple like this.
Dave
Blue_Heron is offline   Reply With Quote
Old 02-12-2014, 01:28 PM   #116
Murderator
Thread Starter
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,185
Total Cats: 2,582
Default

Yep, already checked, its at TDC :(
18psi is offline   Reply With Quote
Old 02-12-2014, 02:28 PM   #117
Destroyer of Inconel
iTrader: (37)
 
EO2K's Avatar
 
Join Date: Apr 2010
Location: In ur driveway, abusin' ur WPA
Posts: 9,642
Total Cats: 954
Default

Quote:
Originally Posted by NiklasFalk View Post
#86, the previous page.
Post #86
Quote:
Originally Posted by 18psi View Post
swapped over:

cam gear
valve cover
all vvt stuff basically

from a good running car

car still won't start.
What I'm saying is... swap the parts from the engine that won't start to the good running car. If the good running car continues to run good, that will completely eliminate that variable.

Stock ECU, MAF, IAT, narrowband and injectors are a quick swap and will tell a lot as well. Provided the tank is not full of E85
EO2K is offline   Reply With Quote
Old 02-12-2014, 02:32 PM   #118
Murderator
Thread Starter
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,185
Total Cats: 2,582
Default

The tank has 4 gallons of e85 in it, I'm planning to drain it and refill with gasoline today or tomorrow, throw on stock injectors and ecu and try that.

IF it fires, I'm going to be really really happy, but also really really pissed off
18psi is offline   Reply With Quote
Old 02-12-2014, 02:45 PM   #119
Destroyer of Inconel
iTrader: (37)
 
EO2K's Avatar
 
Join Date: Apr 2010
Location: In ur driveway, abusin' ur WPA
Posts: 9,642
Total Cats: 954
Default

Back before we got married, my now wife drove 230 miles one way to meet me at Thunderhill to drop off my MAF, ECU and IAT so I could get home after my MS died.

When it starts on the stock parts you will first be relieved.

Then you will ******* RAGE
EO2K is offline   Reply With Quote
Old 02-12-2014, 03:11 PM   #120
Senior Member
iTrader: (5)
 
Join Date: Jul 2005
Posts: 715
Total Cats: 53
Default

GO back to basics: you need, fuel, ignition, and a pump (engine) to have a running car. Let's assume the engine is fine (hardest to check, so leave it for last).

Check fuel, pump is running, fuel is pressurized at the injectors, either a voltmeter (or injector tester/node light of some sort) and use the test menu of the megasquirt to see if all injectors are firing and the right order. Then do the same with a spare coil and spark plug for the ignition. Probably 9 out of 10 you will either find an issue (who knows a cold solder somewhere).

Have had to utilize this after bashing my head at something hard in multiple occasions on a non-running car.
bcrx7 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Raleigh: Fiberglass headlight scope, 1.6L ECU, AFM, Hardtop latches, more bigmackloud Miata parts for sale/trade 13 09-22-2017 01:34 PM
1994 Spec Miata Race Car SM/SM2/SSM For Sale Quinn Cars for sale/trade 6 10-23-2016 08:58 AM
Bizarre connection issue? nick470 MEGAsquirt 1 09-30-2015 11:32 PM
Odd Steering issue interestedofold Suspension, Brakes, Drivetrain 5 09-29-2015 02:42 PM


Tags
2nd saddest thread oty, bloody tamp, gnome sabotage, rage, ragequit

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 10:54 PM.