fjh

NO! Do not replace the econovance sol that is not the issue! try unplugging the main fuel pump plug the big round one do this a half dozen times and see if this changes your situation. the econovance sol only controls the Timing! nothing to do with starting other than the smoke on startup! the issue is (usually ) inside the fuel pump and should be repaired by a fuel shop! How ever the plug is a possibility! There are other places to think about as well (but by your description) it is in the fuel pump! On the early models (93 being the first year )there was a valve on the front of the fuel pump that valve can be disabled it has one wire going to it if it is there! take the wire off and tape it up and gut the valve! these sometimes failed and the valve was a safety precaution that later was deleted!

Search out this post if you’re interested in regaining power and fuel mileage! A little pricey but ……. if you want to spend money on a good fix ! The main issue with the ai engine is you have to keep it wound out to make any decent power it can’t breathe! Mack AI460 AI427 AMI low torque low horsepower poor fuel mileage granite , dead dog , remediation

He is elderly! 😅 and that's OK .We just got a new vehicle recently (a month ago) ! I'm still having issues pushin buttons to change direction! and am still reaching for the key on the steering column ! Might never get use to this shit! The thing even thinks it knows when you need a coffee break puts a tea cup on the screen!😡

Its not worth buying a pop tester unless you know what your looking for ! it is worth pulling the injectors and either rebuilding them or replace them with exchange! The oil could be evidence that the top oring is failing in the injector ! Just my opinion!

politically correct term ( elderly ) My wokeness escaped me when I posted bro sorry! It was early I wasn't awake! 😁 for give me I'm usually more polite !

Just wanted to mention that a member just did a head gasket re/re a month back here! My self I would just clean er up and take a chance! It’s old! The fire ring groves can be an issue if the shop ain’t set up for it! As mentioned! just sayin

Curious if it has def on it! Or egr for that matter! If it’s for Canada probably! We have time to stop the war to regen! don’t we? 😂

It’s unfortunate ! As the emissions got tighter they chipped away at the horsepower ! Calling a 350 a 460 was just BS we actually had a truck dynoed an alleged 460 dynoed out at just over 350 and they wouldn’t do anything about it! Lost that customer! Just political crap !

Good call pro ! If you’re going to check this situation my advice is to replace that elephant tube in the process as they are a common fail item!

we once accidentally put an mp8 boost sensor in an mp10 it turned that thing into an animal it would pull its heart out! It was so scary we got the right sensor for it in case it blew it self up!

I often thought of deeking the sensor by regulating it to seeing only 33 psi I never had the opportunity to do it however it was a thought! If the computer could only see 33 psi it would maybe let the engine have more fuel! It’s only a thought! Something I always wanted to try! A simple adjustable regulator could be used would just have to adapt it!

Could also be the egr cooler !

try greasing the cams and see if the situation changes ! dust is quite likely 1

Make sure your white wire is a good ground! the other two will be as stated or backwards! Remember everything is made in china Taiwan or Mexico !

yes

yes

Have you checked the drain back tee at the end of the pump! Also the jumper between the heads ! Quite common for these return lines to cause start issues! Any of these plastic line can cause issues! Hate to see you throw money at an un needed pump!

pull the line off the service side and see if there is air coming out of the chamber with the brakes released! check both sides just cause its newer don't rule it out shit happens to new stuff too!

Yup cool Mackpro didn't think it was possible to copy the data file you are a true guru ! Soon as any of these hit 33 psi boost they would derate I hated these engines !

If its a spring brake chamber with brakes released you should have air coming out the bottom of the relay an or the foot valve with the brakes released! the piggy back shown in the pic looks fairly new how old is the other side?

Got to ask! these are a rare fail ! Why are you replacing it?

Lack of Fuel in my opinion as well ! l Check all the simple stuff first ! Fuel tank vent lines and hoses to the pump ! Also if the smoke limiter has a hole in the diaphragm it will be low on juice! if you can remove the line to the limiter and blow or suck on it if it wont hold a vacuum or you can blow thru it has a hole in it!

Yup!👍

This is why we do pdi inspections and incudes greasing and checking for missing or loose bolts ! Once ran across an mr with a bolt missing on the rh steering arm for the tie rod ! Also a loose steering box missing spacers! Simple oversight’s the could be disastrous for every one involved! Like wheels falling of jets not a great scenario!

Also check the stop to Mack sure it’s going all the way on!