TBI vs carbuerator on 5.0 Volvo-Penta

[KenPickle]

Could someone please point out the wisdom (or lack there of!) of removing the TBI system on my 1999 Crownline w/ a Volvo-Penta 5.0 and replacing it with an Edelbrock carbuerator. How much will the fuel usage change? Are there any other modifacations needed to complete the change-over? Thank-you! KenPickle The reason i'm asking is because the injector driver is not working (no pulse to injectors) but the coil driver and advance are working fine. the cost for a new ecm is at least $1200.00 as it has a "MEFI 3" which,I understand,is no longer made.I would need to install a "MEFI 4" which needs a different wiring harness (At additional cost!) Also,the boat will be heading to Mexico (Permanently) and I want things as simple as possible! KenPickle.

 

[gbeltran]

Re: TBI vs carbuerator on 5.0 Volvo-Penta

Fuel usuage will probably go up. You will need to change the fuel system, the TBI pumps are a much higher pressure than the carb uses. If you have the fuel pump that is a low pressure pump on the front of the engine and a high pressure one on the back you might be able to use the low pressure pump. You will probably also have to rewire the distributor, I think it's connected through the EFI module, not sure how involved that will be. Why do this? Issues? I know a carb is probably easier to troubleshoot and the EFI system takes some different tools, and a scanner sure helps, is it giving you that much trouble? I think most of the problems VP owners seem to be experiencing have to do with the fuel pumps.

 

[Don S]

Re: TBI vs carbuerator on 5.0 Volvo-Penta

The only reason to stick with carbs and points ignition, is to make problem solving (when things go wrong) easier for non mechanics.

 

[Bondo]

Re: TBI vs carbuerator on 5.0 Volvo-Penta

Could someone please point out the wisdom (or lack there of!) of removing the TBI system on my 1999 Crownline w/ a Volvo-Penta 5.0 and replacing it with an Edelbrock carbuerator. How much will the fuel usage change? Are there any other modifacations needed to complete the change-over? Thank-you! KenPickle

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