1988 mighty max carburetor vacuum diagram needed(actual photos)

[ablor]

Hey guys whats up new to the site. And i have a bit of a little issue with a little mighty max i just.got in the shop. This truck came in with a carb issue ..turns out the previous mechanic installed or tried to install a toyota aisan carb even made a steel plate to make it fit...very bad job...anywho i told my customer we need to get the original so we did. Now i have the issue of not knowing were all the vacuum lines go since they removed all of them. I have the tag were it shows you the diagram but i dont seam to get it. Any help will be apreciated or guidence.IMG_20200406_093538676.jpg

[FMS88]

Welcome to the site. Here's a post with the general hose routing:
http://www.mightyram50.net/vbulletin...vacuum+diagram

Plus here's another below that shows the color coding of the hoses and 'T's. It's for the 2.6L engine but most of it should apply to the 2.0L. If you find a difference, just ask.

I believe some 'T's may have restricted ports, so if the owner didn't provide them, you may have to get them and the hoses from a wrecking yard. Good luck.

Found the diagram for the California 2.0L, the lower one below.

Vacuum_Hose_Routing_2.0L_Cal.jpg

[geezer101]

I would advise you to ditch the lot and install a Weber for your customer. This will eliminate all of the vac issues, make it a lot easier to tune and set up and is a huge improvement in performance over the original Mikuni carb (both power and economy) It will require an electric fuel pump to supply the Weber and trial and error to tune the ignition. In all honesty, the Aisin carb is a headache (not in the same league as the Mikuni but not much better)

[StarquestMan]

Welcome to the site. Here's a post with the general hose routing:
http://www.mightyram50.net/vbulletin...vacuum+diagram

Plus here's another below that shows the color coding of the hoses and 'T's. It's for the 2.6L engine but most of it should apply to the 2.0L. If you find a difference, just ask.

I believe some 'T's may have restricted ports, so if the owner didn't provide them, you may have to get them and the hoses from a wrecking yard. Good luck.

Wow! that has to be the most detailed vacuum diagram on the vacuum setup I have seen, sorry for the quick threadjack but what book is that from? my factory chrysler books only show the functional schematic showing how the system works. unfortunately it appears that the OP is in comifornia like me and almost all counties except 2 or 3 require smog inspections every 2 years with all counties requiring it upon transfer of ownership. I might have some extra vacuum line stuff if the OP cant find a complete vacuum harness although everything I have has came from the 2.6L and I am unfamiliar with the 2.0 so I may not have everything needed for it

[geezer101]

Ah damn. I should've checked the location Yep it's gotta go back to OEM for the political officers of Californiastan...

[FMS88]

Wow! that has to be the most detailed vacuum diagram on the vacuum setup I have seen, sorry for the quick threadjack but what book is that from? my factory chrysler books only show the functional schematic showing how the system works.

The diagrams are from a Chrysler training programs book I found on eBay some time ago.

Manual_1.jpg


Only covers 1987 and 1988, but probably applies to 1989, too. Includes sections for the Colt, Colt Vista, (Ram) D50 Truck and Ram Raider. I've created a compressed Word Doc of the D50 Truck pages, but at 28mb it's too big to upload. I'll add it once I reduce it's size.

[StarquestMan]

Nice! ill have to add that book to my collection, you would think they would have included that info in the main manual but they did like to spread out everything into multiple books. threadjack over

[FMS88]

Not yet... Here's the D50 (Ram 50) Truck section. Couldn't get the full PDF to upload so broke it into two parts in case size (or corruption) was the upload issue.

1987-88 Mikuni Vacuum & Electical Fuel Control Systems_Part 1.pdf
1987-88 Mikuni Vacuum & Electrical Fuel Control Systems_Part 2.pdf

I skipped pages that were duplicate illustrations or ruled for notes only. Has very good illustrations, explanation of component functions plus some diagnostic tests - easier to follow and more thorough than the FSM. It's not perfect but is the best I've found.

[StarquestMan]

thanks for uploading that! that is very good, very descriptive! lots of useful notes from a previous technician too. Im always surprised to find keep finding more and more books on these cars and trucks that I was unaware of. I currently have my eye on a book just for the body repair aspect of the Chrysler imports of the era. if I get it Ill have to scan it in too for everyone here to use!

[ablor]

Hey guys. That diagram helps alot. Thank you very much. Im currently looking for the vacuum hoses or i might just make my own. Im down here in baja California. If anyone has them im willing to pay for shipping. Since im having a hard time looking for a donar truck or anywhere online. ...... Im pretty sure imma have an issue due to the t's

[geezer101]

In all honesty I'd be buying vac hose off a roll and making them myself. You are asking for headaches installing ancient vac lines that have potentially perished or split. Maybe get some spaghetti sleeving so you can mark and ID the hoses for future reference.

[MrPaco]

Does anyone know the spec (size?) on the vacuum hoses for 2nd gen trucks, and where to get some?
When I was looking for some earlier this year I took a little piece to every car part store trying to match it to what they had, no luck. I wanted to order on line, just don't know what to order exactly.

[FMS88]

Measured a scrap piece I have and found OD = 7mm, ID = 3mm. Looked briefly on line and mostly found Asian and European sources selling silicone rubber hoses. If you only need a small amount maybe try a motorcycle repair shop. They might have something compatible.

[xboxrox]

Measured a scrap piece I have and found OD = 7mm, ID = 3mm. Looked briefly on line and mostly found Asian and European sources selling silicone rubber hoses. If you only need a small amount maybe try a motorcycle repair shop. They might have something compatible.

Thanks FMS88 I downloaded the Chrysler Manual even though my truck a 1986 Gen1
There are some similarities that the manual can help explain complicated stuff (for me)
The Gen2 carbureted truck is worse than Gen1 IMHO ~ no wonder many folks have switched over to the Weber carb conversion...

Jacking Complete ~
George

[FMS88]

George,
There are two Chrysler publications that might be more helpful. This one is for 1986 models but for those with the 1.5l engine: https://www.ebay.com/itm/1986-CHRYSL...wAAOSw9bpcjvhE
Not a great fit but I bet there's similarities with your carb.

The other one covers up to 85 carbs on the 2.0 and 2.6 engines, so again not perfect but hopefully some is applicable in your case: https://www.ebay.com/itm/Chrysler-Co...kAAOSwq~FeuHLa

These might be more what you need than the Gen2 carb info.

[xboxrox]

FMS88 You're GREAT

[xboxrox]

George,
There are two Chrysler publications that might be more helpful. This one is for 1986 models but for those with the 1.5l engine: https://www.ebay.com/itm/1986-CHRYSL...wAAOSw9bpcjvhE
Not a great fit but I bet there's similarities with your carb.

The other one covers up to 85 carbs on the 2.0 and 2.6 engines, so again not perfect but hopefully some is applicable in your case: https://www.ebay.com/itm/Chrysler-Co...kAAOSwq~FeuHLa

These might be more what you need than the Gen2 carb info.

I just ordered the 1985 carb manual ~ the seller of the 1.5L book would not ship to Hawaii ~ Thanks again FMS88

[GreenNite]

George,
There are two Chrysler publications that might be more helpful. This one is for 1986 models but for those with the 1.5l engine: https://www.ebay.com/itm/1986-CHRYSL...wAAOSw9bpcjvhE
Not a great fit but I bet there's similarities with your carb.

The other one covers up to 85 carbs on the 2.0 and 2.6 engines, so again not perfect but hopefully some is applicable in your case: https://www.ebay.com/itm/Chrysler-Co...kAAOSwq~FeuHLa

These might be more what you need than the Gen2 carb info.

Your missing pages 34 and 36

[FMS88]

Your missing pages 34 and 36

You're correct. I excluded those because they have no information, just empty ruled lines for trainee notes. Plus I was trying to keep the file size to a minimum.