Another Engine not Workin'

Danbo

FFR6198
Contributing Member
#41
Well, Troy, I hate to say this but maybe you should take it to a mechanic by having them diagnose the problem. I'll cost maybe $80 depending on the length of time. My 2 cents.
 
#42
Well, Troy, I hate to say this but maybe you should take it to a mechanic by having them diagnose the problem. I'll cost maybe $80 depending on the length of time. My 2 cents.
This can be a rabbit hole, I spent way too much trying to diagnose my Mass Flo till I decided to go with a Quickfuel 600VS. I wish I would have done it sooner. That old Mass Flo system was a POS, car has never run better. I do add some Stabil 360 to the tank when I'm not going to drive it for a bit. SO far 5,000 miles since the conversion and couldn't be happier

FYI I bought Bill Patterson's Roadster he was member here.

https://www.ffcars.com/forums/17-factory-five-roadsters/302546-patterson-build-thread-2.html
 

Danbo

FFR6198
Contributing Member
#43
I'm using the 1986 Mustang system with a chip to the ECU, a MASS AIR mod kit, stock distro, Mallory ignitor box and comp cam coil for the last 12 years with only a one time issue (ignitor box failure).
 
#44
I'm using the 1986 Mustang system with a chip to the ECU, a MASS AIR mod kit, stock distro, Mallory ignitor box and comp cam coil for the last 12 years with only a one time issue (ignitor box failure).
you've had good luck, I spoke with Mark Dougherty aka Mark the traveling builder and he relayed to me that he converts more of these systems out to carbs every day.
 

TroyT

Contributing Member
Member
#45
Dan, I'm thinking about taking it to the Mass Flo guru in MD for troubleshoot or do what Caesar did. So, calling Mark Dougherty may be in order. At this point, I'm not sure what to do.
 

TroyT

Contributing Member
Member
#46
This can be a rabbit hole, I spent way too much trying to diagnose my Mass Flo till I decided to go with a Quickfuel 600VS. I wish I would have done it sooner. That old Mass Flo system was a POS, car has never run better. I do add some Stabil 360 to the tank when I'm not going to drive it for a bit. SO far 5,000 miles since the conversion and couldn't be happier

FYI I bought Bill Patterson's Roadster he was member here.

https://www.ffcars.com/forums/17-factory-five-roadsters/302546-patterson-build-thread-2.html
Caesar, What parts were needed to convert? Would you mind listing them here? I don't need the pricing for each part just the parts needed to do the conversion. Thanks.
 

aspenbubba

Larry White - Troll
Contributing Member
Member
#47
Troy,

Sorry to heat about your troubles but I can only sympatize unless your car needs a detailing. I have an empty seat and so does Hector if you want to ride down with us Friday morning or go with us on the cruise "Saturday". Let us know. Good luck pal.
 
#48
Caesar, What parts were needed to convert? Would you mind listing them here? I don't need the pricing for each part just the parts needed to do the conversion. Thanks.
PERTRONIX DISTRIBUTOR
EDELBROCK PERFORMER RPM
QUICK FUEL 600 CFM vs
also fuel pressure regulator

I'd suggest calling Mike Forte he was very helpful good guy knows his stuff

MIKE FORTE
FORTE'S PARTS CONNECTION INC.
40 PEARL STREET
FRAMINGHAM, MASS. 01702
Shop: 508-875-0016
Cell:781-248-8946

I would also look into the sensor for the electric fan, I dont remember if we needed to rewire that or not because I think the FI ran it. Also, not sure what engine your running I have a 347 stroker with AFR 185 heads 10:1 comp, but a relatively mild cam
 

Danbo

FFR6198
Contributing Member
#49
Dan, I'm thinking about taking it to the Mass Flo guru in MD for troubleshoot or do what Caesar did. So, calling Mark Dougherty may be in order. At this point, I'm not sure what to do.
Remember, Mark and his wife are on their way back from the west coast. Best to contact him via Facebook or iMessenger to see if he drop by or make arrangements to his place.
 

Scott Harrison

"Growing old is mandatory, growing up is optional"
Staff member
Contributing Member
Member
#51
Another alternative:
MSD ready to run dizzy.
Holley 650
Performer RPM manifold and gaskets.
Fuel regulator and pressure gauge
Carburetor fuel rail
Not sure about throttle linkage.

Leave the return line in place

If you installed the "Ass flo", you can easily do the carburetor conversion.
 
Last edited:

Scott Harrison

"Growing old is mandatory, growing up is optional"
Staff member
Contributing Member
Member
#52
BTW, I meant to ask before, what is your timing advance setting at idle and full advance? Do you still remove the spout connector when setting it?
 

Don Gaboury

Contributing Member
#53
Troy,,, did you ever try a distributor ? Also, does your engine have a EGR valve on it? I would fire it up and spray gum cutter all around the intake, injectors, and any vacuum lines and around the EGR if you have one.. How about your PCV valve?? Pull it out and see if the engine runs better. Thats much better than swapping out the EFI for a carb.
 

TroyT

Contributing Member
Member
#55
UPDATE: J. Bissell came over this past weekend and we narrowed it down to the Idle Air Control Valve. When we disconnected the wiring connector from the IAC valve, the engine idled and ran like it should and drove it with the IAC wire disconnected and it ran great! The engine check light remains on because of this disconnection in the harness. Now, we need to figure out why it runs well with a disconnected IAC valve. Perhaps no signal being transmitted between the IAC valve and the ECM. We will look further into this, this coming weekend.
 

Danbo

FFR6198
Contributing Member
#56
UPDATE: J. Bissell came over this past weekend and we narrowed it down to the Idle Air Control Valve. When we disconnected the wiring connector from the IAC valve, the engine idled and ran like it should and drove it with the IAC wire disconnected and it ran great! The engine check light remains on because of this disconnection in the harness. Now, we need to figure out why it runs well with a disconnected IAC valve. Perhaps no signal being transmitted between the IAC valve and the ECM. We will look further into this, this coming weekend.
YAY John!O0O0O0O0
 

Scott Harrison

"Growing old is mandatory, growing up is optional"
Staff member
Contributing Member
Member
#58
John Bissell got the car to run well by disconnecting the IAC valve...
very weird.

Based on the trouble light flashes (OBD 1), We suspect the MAF sensor is bad and the TPS is somehow compensating for the IAC.

Next step, back probe the MAF & TPS.
 
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