[86 XT EA82 MPFI fuel pressure regulator question]

5 minutes ago, Step-a-toe said:

Oh yeah , often parts supplied may not look same as factory but will do the job, just maybe some mods.

I trust pipe size is correct?

What year and model did you order for?

I ordered for 86 XT 1.8.  I wanted to make sure I'm taking out the right part, since it's buried under there.  Thank you.

[86 XT EA82 MPFI fuel pressure regulator question]

Is the first picture the fuel pressure regulator?  The 2nd picture is what I received from RockAuto, it's a bit smaller.

Thanks for your help.

Tim

[EA82 timing driving me crazy]

Hi guys,

Thank you all for your input.  Sorry but some things have come up and I haven't had time to work on the Subie lately.  I'm hoping to return to it this weekend, and I'll be sure to report back!

Tim

[EA82 timing driving me crazy]

24 minutes ago, Step-a-toe said:

Better look harder at dizzy as it must have an electrical connection !

You're right, there's an electrical wire.  Here's a picture of the distributor with the flywheel at 0 degrees.

[EA82 timing driving me crazy]

4 minutes ago, Step-a-toe said:

Ok. Don't know EGR, or don't know why I suggested it?

Not sure myself I have had issue with innards chocked With carbon, valve stuck open causing a run problem but not a timing problem

Ok, flapper so should be vac can on side of dizzy so total timing and advance control via dizzy so does not need any electrical plugs changed. Just vac hose off dizzy and plugged so no vac leaks

Trying to think here on positions of things as I have applied to get things started.

On my flapper EA82T I have Hitachi distributor and non turbo using a carb dizzy that is Denso - in same car.

In the same set flywheel position at 20°BTDC, the rotor button points squarely at the firewall for the Hitachi, call it 12 o'clock and the trigger parts aligned almost, think I slide @ feeler gauge between two components

Yet, with NA engine at 20° the Denso rotor points more about 2 o'clock position

 

Sorry I didn't see your EGR post.  Thanks for that.  I have not checked EGR and PCV tubes.  I'll give that a try.  The distributor does not have an electrical connection, but it does have 2 vacuum lines going to it.

[EA82 timing driving me crazy]

19 hours ago, Step-a-toe said:

With the MPFi and green plugs connected or disconnected, is there a difference in the timing?

Reading off the flywheel?

With the flapper style should be a three plug ecu and no wire connector to connect/ disconnect surely when setting timing ?

All the timing is mechanical and vacuum surely ?

Or have you got flapper afm, optical dizzy and four plug ecu?

Think only time I altered the green plugs was for an error scan reading red led on ECU

no difference if green connector is connected or not. 

Yes reading timing marks on flywheel.

Sorry I don't understand your 3rd question.

Yes, timing is mechanical and vacuum as far as I know

it has flapper type MAF sensor.  I don't know what an optical distributor is, and I don't know if it's a 4 plug ECU

Thanks for your input.

[EA82 timing driving me crazy]

On 6/14/2020 at 11:51 PM, el_freddo said:

Are you sure you’ve got your Before and after TDC the right way around? 

The Hotwire AFM MPFI needs 20deg BTDC static (green test plugs connected under the dash), this could be different for the flapper and vac advanced MPFI engine management. You might also need to connect some test connectors for dizzy timing changes. 

A new catalytic converter would be a good investment for smog, as would a new O2 sensor too. O2 sensors go bad and don’t always throw a code or show a CEL.

Cheers 

Bennie

yeah, pretty sure I've got B and A TDC correct.  Thank you.

[EA82 timing driving me crazy]

Thank you, all good ideas.

The car runs like crap at 6 degrees BTDC, but it runs well when I set distributor to 10 degrees after TDC.  Seems odd to me.  Any clues what's going on?

Thanks again

[EA82 timing driving me crazy]

Update!  Half an hour after I posted this, the forum juju must've kicked in and I got it running at 6 degrees BTDC with the vacuum line disconnected.  However it's not running smoothly.  I'm still worried that it won't pass smog if its running roughly. 

Some other info - recently I gave the flapper type mass airflow sensor a good cleaning- it needed it.  I also replaced all injectors, cleaned gas tank and lines, replaced fuel pump and filter.  Any suggestions to make it run smoother?  Thanks again.

[EA82 timing driving me crazy]

I've got an 86 XT, MPFI 5 speed that sat for 20 years.  Recently I replaced timing belts, put it together and it runs fine.  Went to get smog checked and failed.  The sticker under hood specifies timing 6 degrees BTDC with vacuum disconnected.  Car runs well but timing light (#1 cyl) shows 12 degrees after TDC with vacuum hoses connected and green connector disconnected.  Then I disconnect and plug vacuum hoses on distributor, and the car won't run at all.   I've watched the Miles Fox videos and have the service manual.  I've removed & reinstalled the distributor several times to try to advance the timing, but there is only 1 distributor position where the car will run at all.  I've triple checked, the center marks on flywheel are on the mark when the drivers side (USA) cam is straight up, and passenger side cam is straight down. I swear I've done everything by the book, but I can't get it to 6 degrees BTDC and have the car run.  What am I doing wrong? 

Thank you

[86 XT DL fuel pump inoperative]

Hi, I recently inherited an 86 XT DL, manual trans.  My (now deceased) brother-in-law was driving the car 20 years ago when it died, and no one knows why.  Car has been sitting in a garage for 20 years, now I'm trying to resurrect it.

It cranks over and has spark.  Fuel pump doesn't work.  I've replaced the fuel pump and relay.  I've swapped fuel pump leads both ways.  I've checked fusible links and fuses.  Still no power to fuel pump.

What other things can I check?  Could a bad ECU cause this issue?  How do you know if the ECU is bad?

Thank you all.