I swapped my 13B engine in my 83 GS. I am running a dellorto DHLA48. When i started the engine the first time, there was a lot of backfires, and the idle wasn't standing, i had trouble to keep her alive... The brand news 13B header turned red. After starting it a few times and running it at 4-5K rpm, the car was revving much better, and there was no smoke. But i have to hold the gas to keep it alive, if i release it, it dies. Some people told me it could be a vacuum leak in the intake manifold.

I am running a RB complete streetport exhaust, dellorto carb, carter fuel pump, RB upper manifold, GSL-SE lower manifold.

I put new gaskets on the intake, i put sealant to be sure that it wasn't going to leak. I plugged 2 of the 4 OMP tubes on the dellorto like it was on the 12a. The 2 other tubes are connected to the motor, but the hoses are cut ?! ...

another problem i have, my temp sensor and gauge doesn't work.

damn, i hope to find the problem


Max

 

run the car and have somebody spray carb cleaner or brake clean will work too. if the idle raises then you have a intake leak

the temp sensor is on the back of the block by the oil sending unit . the wire color is yellow , is it connected?

 

i'll check by this weekend, my car is at a garage where i work on it.

the problem is that i have NO idle lol... so, i try to handle it maybe to 3000rpm then put carb cleaner.

Max

 

that will work, as long as you hold it steady whils somebody sprays the carb cleaner. your symptoms sound like an intake leak

 

yeah I hope, i'm just too excited to drive it, the engine runs so well, no smoke... can't wait

 

Hey, but thank Man for all your help !!!! It's really appreciated

 

Good news, i found the intake leak !!! The car runs superb now, amazing power !

I was happy to drive it, since i didn't drive her for 2 months, the nice sound of the dellorto !