Engine Problems And they are getting worst....

9

92Typhoon1679

Member
I pulled out my motor last month just to Fix all the oil leaks and change out the timing chain and rocker arms nothing internal
When i First Start it its Idles good for about 2 min then all hell brakes loose
its starts missing and has a Very Bad Idle from 600 rpm to 1000 rpm like its hunting.
I turn off my truck and restart is it gets better but not much.
it Really runs Terrible

(((((Update))))))
Ive blown my ECMB Fuse Twice Ive upgraded to a 15 Amp Fuse but it Gets HOT
is it My Fuel Pump?
My Fuel Pressure is set at 42Lbs but when it Starts Running bad it drops to about 20 Lbs up and Down to 42Lbs When i Turn off the Engine it holds pressure for about 1 Hour then goes down to Zero.


its not the Rocker Arms..
Or Timing Chain.
Checked those MANY TIMES.
Its Got a New Distributor New Taylor Wires New Plugs
Ive Tryed EVERYTHING

So i hooked up my laptop and did I Drove it to work.

My BLM is Really High like 170 and Really Low almost 0 at Idle
My BPW is always Low in the red about 1.99
My IAT is 100
Everything else is with in standards

Ive Removed the EGR and i have a Kenne Bell Air to Air
Ive Checked and Re-Checked Timming
Ive Replaced all the Vacume lines Twice.

PLEASE HELP
Ive tryed everything Being in Japan there is no shop to take it..
Im trying to get it ready to ship it back to the states so it has to run good.
This is my Favorite car !!!

I did check my IAC it looks terrible im getting a new one

Update 17 Aug Replaced Throttle Position Sensor
17 Aug Readjusted Rockers Again for the 3rd time with engine running

STILL RUNS TERRIBLE!!!!!!
 
Last edited:
dgoodhue

dgoodhue

BuSTeD 4.3
Re: Engine Problems

Re: Engine Problems

My first thought is, since you did the timing chain and had the distibutor out. Is the cam timing, distributor and timing set up properly?
 
9

92Typhoon1679

Member
Re: Engine Problems

Re: Engine Problems

When i changed the timing chain and Distributor i just put the new one in the Exact place the original one at. i checked and Rechecked it to make shure. and i even checked the Book to make shure.
 
J

just a 6

R.I.P MyClone
Re: Engine Problems

Re: Engine Problems

On the crank gear for the timing chain, did you have the 3 different marks so you could retard or advance the timing?

If you did are you sure you got it on 0 degree so it's not retard or advanced 4 degree?

Or, did you adjust the valves to tight?
 
9

92Typhoon1679

Member
Re: Engine Problems

Re: Engine Problems

I made shure it was set at 0 on the crank gear. i actually adjusted them 1/2 turn down from zero lash.
 
Last edited:
NecroWolf

NecroWolf

lost marbles member
Re: Engine Problems

Re: Engine Problems

i'm with just a six. dbl check your valve lash. do it with the engine running if you can. back them off one at a time till you hear them clicking and slowly slowly tighten them till they quiet down.
 
9

92Typhoon1679

Member
Re: Engine Problems

Re: Engine Problems

ReAdjust Valve Last Again With Engine Running Backed them out and tightened them up until the ticking stopped
They were adjusted a little to tight because when i backed them out oil started to flow much better

Replaced Throttle Position Sensor
Replaced Intake Temp Sensor

BUT STILL RUNS TERRIBLE!! Nothing Changed

Next thing is Rebuild Throttle Body With New IAC and Gaskets

PLEASE HELP ANYBODY
 
9

92Typhoon1679

Member
20 August update

20 August update

Started by hooking up my Turbo Link and getting a look to see what was going on.
My BLM was VERY low 90 Which means its running Rich, Still Spitting and sputtering along with very rough idle

Started by rebuilding Throttle Body New TPS and IAC
LOOKED TERRIBLE VERY OILY Totally Gummed up
looked down intercooler its NOT comming from Turbo its cumming from PVC
Valve.

Cleaned and installed New throttle body Equipment
Removed Injectors Installed New Filters and Orings and Pintle Covers

Stated Engine

Stated Running 1500 RPM wont Idle Down IAC Malfuntion on Turbo Link
and BLM is at 90
installed another New IAC

Started 1500 RPM, IAC Malfunction BLM 90 Still
Stated Adjusting Fuel Pressure helped a little
Stated Adjusting Idle Screw down Watching BLM DID help IAC Error went away

NOW i have a BLM or 110 at Idle it holds a good idle but when i Lightly press the Throttle while driving the BLM Drops 90 Starts Spitting a Sputtering a little not as bad as before could my AFPR be going bad or WHAT IS IT PLEASE HELP>>>

I know is Running Rich how do i fix it...
 
I

IneedaSY

New member
Re: Engine Problems Updated

Re: Engine Problems Updated

If i remember right don't you have to get the truck over a certain speed to reset the IAC when you replace it?
 
supersports10

supersports10

New member
Re: Engine Problems Updated

Re: Engine Problems Updated

92Typhoon1679 said:
I pulled out my motor last month just to Fix all the oil leaks and change out the timing chain and rocker arms nothing internal
When i First Start it its Idles good for about 2 min then all hell brakes loose
its starts missing and has a Very Bad Idle from 600 rpm to 1000 rpm like its hunting.
I turn off my truck and restart is it gets better but not much.
it Really runs Terrible

(((((Update))))))
Ive blown my ECMB Fuse Twice Ive upgraded to a 15 Amp Fuse but it Gets HOT
is it My Fuel Pump?
My Fuel Pressure is set at 42Lbs but when it Starts Running bad it drops to about 20 Lbs up and Down to 42Lbs When i Turn off the Engine it holds pressure for about 1 Hour then goes down to Zero.
Click to expand...

plain and simple, it's your fuel pump. get a walbaro.

bosch style injectors are desinged to run at 42 psi and above. the fact that your fp drops to 20 psi is all i need to know.

get one from detroit turbo, or another vendor.

the check valve seems ok, the pump is just dying.

also the other tell tale sign of a bad fuel pump is a blown ecm b fuse, and the fact that when you put a bigger one in, it get's hot.

hope this helps.

SS
 
InvisiBill

InvisiBill

Active member
Re: Engine Problems Updated

Re: Engine Problems Updated

Many people have to upgrade the fuse when they switch to a Walbro. It shouldn't be blowing fuses left and right though. If you're having fueling problems and the fuse keeps blowing, it sounds like it could be the fuel pump going bad.

I suggest getting a Racetronix harness (or making your own) for it. The stock wiring still triggers the fuel pump, but it uses a relay and actually draws current directly from the alternator instead of through the factory wiring. That should put less stress on the factory wiring, as well as giving you more power to the pump (which means more output). http://www.syty.net/forums/showthread.php?t=6076
 
9

92Typhoon1679

Member
Re: Engine Problems Updated

Re: Engine Problems Updated

Well i Tryed tuning today a little
I Adjusted the Idle Screw on the Throttle body

After it Heats up it runs better it actually idles ok..not Great but not surging so bad.
But i still get a BLM of 90 and Spitting and sputtering when taking off from about 750 RPM to 1500 RPM.

My Fuel pressure doesnt drop it holds around 40 PSI but my truck is still Running Rich..

I do have my thermastat removed Does that make a difference?

And how long should my Fuel pressure hold after i turn off the engine.?
 
NecroWolf

NecroWolf

lost marbles member
Re: Engine Problems Updated

Re: Engine Problems Updated

no thermostat can cause some problems with fuel injection. it'll also cause over heating cause the water doesn't have a chance to cool down.
 
9

92Typhoon1679

Member
Re: Engine Problems And they are getting worst....

Today i drove it to a Park about 20 Miles away well i parked it there for the day
Came back that night tryed to start engine would not start at all.
check Fuel pressure its ok
Checked Coil wire its ok
moved around and rechecked ignition wires ok..
Removed Both fuses and waited 5 min. reinstalled and it started..
drove for about 5 min engine just cut off
waited rechecked everything started again for about 2 min cut off
Removed MSD to see if it was bad didnt help..
over and over same thing

CALLED TOW TRUCK>>>>JUST SPENT $200.00 for a TOW
Can anybody Help...
 
Raist103

Raist103

Engine Killer, iPhone Killer, Lawnmower Killer
Re: Engine Problems And they are getting worst....

a friends ty was doing the same thing the other day it was a wire going to the alt. was lose on a splice, just kept shutting down after a min or if the throttle was pushed down.
 
9

92Typhoon1679

Member
Re: Engine Problems And they are getting worst....

Well i fixed the cutting off problem replaced the Distributor with the original
and i swapped out the ECM too Still did not fix the problem

i disconnected the oxygen sensor and started my truck and it runs Great
but when i reconnected all the problems started over could it be the sensor
 
jjorgensen52

jjorgensen52

NHSTE - I'm the only one!
Re: Engine Problems Updated

Re: Engine Problems Updated

IneedaSY said:
If i remember right don't you have to get the truck over a certain speed to reset the IAC when you replace it?
Click to expand...
I got a procedure off of here to do it, 99% sure it was connect terminal A to ground, turn key on, turn key off, disconnect. Not 100% sure though...
 
9

92Typhoon1679

Member
Re: Engine Problems And they are getting worst....

I was Reviewing Data from My Turbo Link and it shows my O2 sensor is alway about 500mv and never really changes is that bad or good?
 
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