Exhaust popping on deceleration (1.7 D-Jet), After changing MSP for a rebuilt one |
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Exhaust popping on deceleration (1.7 D-Jet), After changing MSP for a rebuilt one |
Jazzy |
Jul 12 2018, 03:57 AM
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#1
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Newbie Group: Members Posts: 32 Joined: 16-September 17 From: The Netherlands Member No.: 21,432 Region Association: Europe |
I have a '73 1.7 with the stock D-Jetronic installed. The engine was lacking power, overall and especially around 3k rpm, so my mechanic and I checked everything from sparks to fuel. Started with the ignition and replaced the system with a new 1-2-3 ignition, coil, spark plugs and cables. Huge improvement, especially more torque at low rpm.
Next the D-Jetronic parts were checked and discovered that I had the wrong MPS and two 2.0 injectors. The injectors were changed with proper ones and all four tested. Fuel pressure was slightly off but everything else looked good. When I got the car back from the shop I ordered a rebuilt MPS from Auto Atlanta and ordered this one: http://www.autoatlanta.com/detail.php?pn=B...E&user=Mike With this MPS, my car drives much better and is definitely more powerful. Unfortunately the car now pops in the exhaust when decelerating. Replace the old MPS again, no more pops but also less power. Any suggestions on next steps? |
Bob L. |
Jul 12 2018, 02:39 PM
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#2
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Senior Member Group: Members Posts: 847 Joined: 7-August 11 From: Austin TX Member No.: 13,411 Region Association: Southwest Region |
I had popping from the exhaust on decelleration when my heat exchangers were not secured tightly. AKA exhaust leak at the head/heat exchanger interface.
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